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<!--- Hugo front matter used to generate the website version of this page:
linkTitle: ASP.NET Core
--->
# Semantic conventions for ASP.NET Core metrics
**Status**: [Stable][DocumentStatus]
This article defines semantic conventions for ASP.NET Core metrics.
<!-- toc -->
- [Server](#server)
- [Routing](#routing)
- [Metric: `aspnetcore.routing.match_attempts`](#metric-aspnetcoreroutingmatch_attempts)
- [Exceptions](#exceptions)
- [Metric: `aspnetcore.diagnostics.exceptions`](#metric-aspnetcorediagnosticsexceptions)
- [Rate-limiting](#rate-limiting)
- [Metric: `aspnetcore.rate_limiting.active_request_leases`](#metric-aspnetcorerate_limitingactive_request_leases)
- [Metric: `aspnetcore.rate_limiting.request_lease.duration`](#metric-aspnetcorerate_limitingrequest_leaseduration)
- [Metric: `aspnetcore.rate_limiting.queued_requests`](#metric-aspnetcorerate_limitingqueued_requests)
- [Metric: `aspnetcore.rate_limiting.request.time_in_queue`](#metric-aspnetcorerate_limitingrequesttime_in_queue)
- [Metric: `aspnetcore.rate_limiting.requests`](#metric-aspnetcorerate_limitingrequests)
- [Identity](#identity)
- [Metric: `aspnetcore.identity.user.create.duration`](#metric-aspnetcoreidentityusercreateduration)
- [Metric: `aspnetcore.identity.user.update.duration`](#metric-aspnetcoreidentityuserupdateduration)
- [Metric: `aspnetcore.identity.user.delete.duration`](#metric-aspnetcoreidentityuserdeleteduration)
- [Metric: `aspnetcore.identity.user.check_password_attempts`](#metric-aspnetcoreidentityusercheck_password_attempts)
- [Metric: `aspnetcore.identity.user.generated_tokens`](#metric-aspnetcoreidentityusergenerated_tokens)
- [Metric: `aspnetcore.identity.user.verify_token_attempts`](#metric-aspnetcoreidentityuserverify_token_attempts)
- [Metric: `aspnetcore.identity.sign_in.authenticate.duration`](#metric-aspnetcoreidentitysign_inauthenticateduration)
- [Metric: `aspnetcore.identity.sign_in.check_password_attempts`](#metric-aspnetcoreidentitysign_incheck_password_attempts)
- [Metric: `aspnetcore.identity.sign_in.sign_ins`](#metric-aspnetcoreidentitysign_insign_ins)
- [Metric: `aspnetcore.identity.sign_in.sign_outs`](#metric-aspnetcoreidentitysign_insign_outs)
- [Metric: `aspnetcore.identity.sign_in.two_factor_clients_remembered`](#metric-aspnetcoreidentitysign_intwo_factor_clients_remembered)
- [Metric: `aspnetcore.identity.sign_in.two_factor_clients_forgotten`](#metric-aspnetcoreidentitysign_intwo_factor_clients_forgotten)
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## Server
## Routing
All routing metrics are reported by the `Microsoft.AspNetCore.Routing` meter.
### Metric: `aspnetcore.routing.match_attempts`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.routing.match_attempts` | Counter | `{match_attempt}` | Number of requests that were attempted to be matched to an endpoint. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Routing`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.routing.match_status`](/docs/registry/attributes/aspnetcore.md) | string | Match result - success or failure | `success`; `failure` | `Required` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`aspnetcore.routing.is_fallback`](/docs/registry/attributes/aspnetcore.md) | boolean | A value that indicates whether the matched route is a fallback route. | `true` | `Conditionally Required` if and only if a route was successfully matched. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`http.route`](/docs/registry/attributes/http.md) | string | The matched route, that is, the path template in the format used by the respective server framework. [1] | `/users/:userID?`; `{controller}/{action}/{id?}` | `Conditionally Required` if and only if a route was successfully matched. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `http.route`:** MUST NOT be populated when this is not supported by the HTTP server framework as the route attribute should have low-cardinality and the URI path can NOT substitute it.
SHOULD include the [application root](/docs/http/http-spans.md#http-server-definitions) if there is one.
---
`aspnetcore.routing.match_status` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Match failed | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `success` | Match succeeded | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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## Exceptions
Exceptions Metric is reported by the `Microsoft.AspNetCore.Diagnostics` meter.
### Metric: `aspnetcore.diagnostics.exceptions`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.diagnostics.exceptions` | Counter | `{exception}` | Number of exceptions caught by exception handling middleware. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Diagnostics`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.diagnostics.exception.result`](/docs/registry/attributes/aspnetcore.md) | string | ASP.NET Core exception middleware handling result. | `handled`; `unhandled` | `Required` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException`; `Contoso.MyException` | `Required` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`aspnetcore.diagnostics.handler.type`](/docs/registry/attributes/aspnetcore.md) | string | Full type name of the [`IExceptionHandler`](https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.diagnostics.iexceptionhandler) implementation that handled the exception. | `Contoso.MyHandler` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.diagnostics.handler.type`:** if and only if the exception was handled by this handler.
---
`aspnetcore.diagnostics.exception.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `aborted` | Exception handling didn't run because the request was aborted. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `handled` | Exception was handled by the exception handling middleware. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `skipped` | Exception handling was skipped because the response had started. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `unhandled` | Exception was not handled by the exception handling middleware. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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## Rate-limiting
All rate-limiting metrics are reported by the `Microsoft.AspNetCore.RateLimiting` meter.
### Metric: `aspnetcore.rate_limiting.active_request_leases`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.rate_limiting.active_request_leases` | UpDownCounter | `{request}` | Number of requests that are currently active on the server that hold a rate limiting lease. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.RateLimiting`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.rate_limiting.policy`](/docs/registry/attributes/aspnetcore.md) | string | Rate limiting policy name. | `fixed`; `sliding`; `token` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.rate_limiting.policy`:** if the matched endpoint for the request had a rate-limiting policy.
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### Metric: `aspnetcore.rate_limiting.request_lease.duration`
this metric SHOULD be specified with
[`ExplicitBucketBoundaries`](https://github.com/open-telemetry/opentelemetry-specification/tree/v1.48.0/specification/metrics/api.md#instrument-advisory-parameters)
of `[ 0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10 ]`.
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.rate_limiting.request_lease.duration` | Histogram | `s` | The duration of rate limiting lease held by requests on the server. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.RateLimiting`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.rate_limiting.policy`](/docs/registry/attributes/aspnetcore.md) | string | Rate limiting policy name. | `fixed`; `sliding`; `token` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.rate_limiting.policy`:** if the matched endpoint for the request had a rate-limiting policy.
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### Metric: `aspnetcore.rate_limiting.queued_requests`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.rate_limiting.queued_requests` | UpDownCounter | `{request}` | Number of requests that are currently queued, waiting to acquire a rate limiting lease. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.RateLimiting`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.rate_limiting.policy`](/docs/registry/attributes/aspnetcore.md) | string | Rate limiting policy name. | `fixed`; `sliding`; `token` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.rate_limiting.policy`:** if the matched endpoint for the request had a rate-limiting policy.
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### Metric: `aspnetcore.rate_limiting.request.time_in_queue`
this metric SHOULD be specified with
[`ExplicitBucketBoundaries`](https://github.com/open-telemetry/opentelemetry-specification/tree/v1.48.0/specification/metrics/api.md#instrument-advisory-parameters)
of `[ 0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10 ]`.
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.rate_limiting.request.time_in_queue` | Histogram | `s` | The time the request spent in a queue waiting to acquire a rate limiting lease. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Meter name: `Microsoft.AspNetCore.RateLimiting`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.rate_limiting.result`](/docs/registry/attributes/aspnetcore.md) | string | Rate-limiting result, shows whether the lease was acquired or contains a rejection reason | `acquired`; `request_canceled` | `Required` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`aspnetcore.rate_limiting.policy`](/docs/registry/attributes/aspnetcore.md) | string | Rate limiting policy name. | `fixed`; `sliding`; `token` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.rate_limiting.policy`:** if the matched endpoint for the request had a rate-limiting policy.
---
`aspnetcore.rate_limiting.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `acquired` | Lease was acquired | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `endpoint_limiter` | Lease request was rejected by the endpoint limiter | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `global_limiter` | Lease request was rejected by the global limiter | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `request_canceled` | Lease request was canceled | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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### Metric: `aspnetcore.rate_limiting.requests`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.rate_limiting.requests` | Counter | `{request}` | Number of requests that tried to acquire a rate limiting lease. [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) | |
**[1]:** Requests could be:
* Rejected by global or endpoint rate limiting policies
* Canceled while waiting for the lease.
Meter name: `Microsoft.AspNetCore.RateLimiting`; Added in: ASP.NET Core 8.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.rate_limiting.result`](/docs/registry/attributes/aspnetcore.md) | string | Rate-limiting result, shows whether the lease was acquired or contains a rejection reason | `acquired`; `request_canceled` | `Required` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`aspnetcore.rate_limiting.policy`](/docs/registry/attributes/aspnetcore.md) | string | Rate limiting policy name. | `fixed`; `sliding`; `token` | `Conditionally Required` [1] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
**[1] `aspnetcore.rate_limiting.policy`:** if the matched endpoint for the request had a rate-limiting policy.
---
`aspnetcore.rate_limiting.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `acquired` | Lease was acquired | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `endpoint_limiter` | Lease request was rejected by the endpoint limiter | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `global_limiter` | Lease request was rejected by the global limiter | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| `request_canceled` | Lease request was canceled | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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## Identity
All ASP.NET Core Identity metrics are reported by the `Microsoft.AspNetCore.Identity` meter.
### Metric: `aspnetcore.identity.user.create.duration`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.create.duration` | Histogram | `s` | The duration of user creation operations. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.error_code`](/docs/registry/attributes/aspnetcore.md) | string | The error code for a failed identity operation. | `DefaultError`; `PasswordMismatch` | `Conditionally Required` if an error was set on a failed identity result. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.result`](/docs/registry/attributes/aspnetcore.md) | string | The result of the identity operation. | `success`; `failure` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type or the identity error code. | `System.OperationCanceledException`; `PasswordMismatch` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Identity operation failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Identity operation was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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### Metric: `aspnetcore.identity.user.update.duration`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.update.duration` | Histogram | `s` | The duration of user update operations. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.user.update_type`](/docs/registry/attributes/aspnetcore.md) | string | The user update type. | `update`; `user_name`; `reset_password` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.error_code`](/docs/registry/attributes/aspnetcore.md) | string | The error code for a failed identity operation. | `DefaultError`; `PasswordMismatch` | `Conditionally Required` if an error was set on a failed identity result. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.result`](/docs/registry/attributes/aspnetcore.md) | string | The result of the identity operation. | `success`; `failure` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type or the identity error code. | `System.OperationCanceledException`; `PasswordMismatch` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Identity operation failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Identity operation was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`aspnetcore.identity.user.update_type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | Any update type that the instrumentation has no prior knowledge of. | ![Development](https://img.shields.io/badge/-development-blue) |
| `access_failed` | Identity user access failure recorded. | ![Development](https://img.shields.io/badge/-development-blue) |
| `add_claims` | Identity user claims added. | ![Development](https://img.shields.io/badge/-development-blue) |
| `add_login` | Identity user login added. | ![Development](https://img.shields.io/badge/-development-blue) |
| `add_password` | Identity user password added. | ![Development](https://img.shields.io/badge/-development-blue) |
| `add_to_roles` | Identity user added to roles. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_email` | Identity user email changed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_password` | Identity user password changed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_phone_number` | Identity user phone number changed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `confirm_email` | Identity user email confirmed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `generate_new_two_factor_recovery_codes` | Identity user new two-factor recovery codes generated. | ![Development](https://img.shields.io/badge/-development-blue) |
| `password_rehash` | Identity user password rehashed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `redeem_two_factor_recovery_code` | Identity user two-factor recovery code redeemed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_authentication_token` | Identity user authentication token removed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_claims` | Identity user claims removed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_from_roles` | Identity user removed from roles. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_login` | Identity user login removed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_passkey` | Identity user passkey removed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `remove_password` | Identity user password removed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `replace_claim` | Identity user claim replaced. | ![Development](https://img.shields.io/badge/-development-blue) |
| `reset_access_failed_count` | Identity user access failure count reset. | ![Development](https://img.shields.io/badge/-development-blue) |
| `reset_authenticator_key` | Identity user authenticator key reset. | ![Development](https://img.shields.io/badge/-development-blue) |
| `reset_password` | Identity user password reset. | ![Development](https://img.shields.io/badge/-development-blue) |
| `security_stamp` | Identity user security stamp updated. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_authentication_token` | Identity user authentication token set. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_email` | Identity user email set. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_lockout_enabled` | Identity user lockout enabled or disabled. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_lockout_end_date` | Identity user lockout end date set. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_passkey` | Identity user passkey set. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_phone_number` | Identity user phone number set. | ![Development](https://img.shields.io/badge/-development-blue) |
| `set_two_factor_enabled` | Identity user two-factor authentication enabled or disabled. | ![Development](https://img.shields.io/badge/-development-blue) |
| `update` | Identity user updated. | ![Development](https://img.shields.io/badge/-development-blue) |
| `user_name` | Identity user name updated. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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<!-- endsemconv -->
### Metric: `aspnetcore.identity.user.delete.duration`
<!-- semconv metric.aspnetcore.identity.user.delete.duration -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.delete.duration` | Histogram | `s` | The duration of user deletion operations. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.error_code`](/docs/registry/attributes/aspnetcore.md) | string | The error code for a failed identity operation. | `DefaultError`; `PasswordMismatch` | `Conditionally Required` if an error was set on a failed identity result. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.result`](/docs/registry/attributes/aspnetcore.md) | string | The result of the identity operation. | `success`; `failure` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type or the identity error code. | `System.OperationCanceledException`; `PasswordMismatch` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Identity operation failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Identity operation was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.user.check_password_attempts`
<!-- semconv metric.aspnetcore.identity.user.check_password_attempts -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.check_password_attempts` | Counter | `{attempt}` | The number of check password attempts. Only checks whether the password is valid and not whether the user account is in a state that can log in. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.password_check_result`](/docs/registry/attributes/aspnetcore.md) | string | The result from checking the password. | `success`; `failure` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.password_check_result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Password check failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `password_missing` | Password check couldn't proceed because the password was missing from the user. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Password check was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success_rehash_needed` | Password check was successful however the password was encoded using a deprecated algorithm and should be rehashed and updated. | ![Development](https://img.shields.io/badge/-development-blue) |
| `user_missing` | Password check couldn't proceed because the user was missing. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.user.generated_tokens`
<!-- semconv metric.aspnetcore.identity.user.generated_tokens -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.generated_tokens` | Counter | `{count}` | The total number of token generations. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.token_purpose`](/docs/registry/attributes/aspnetcore.md) | string | What the token will be used for. | `success`; `failure` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.token_purpose` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | Any token purpose that the instrumentation has no prior knowledge of. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_email` | The token is for changing the user email address. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_phone_number` | The token is for changing a user phone number. | ![Development](https://img.shields.io/badge/-development-blue) |
| `email_confirmation` | The token is for confirming user email address. | ![Development](https://img.shields.io/badge/-development-blue) |
| `reset_password` | The token is for resetting a user password. | ![Development](https://img.shields.io/badge/-development-blue) |
| `two_factor` | The token is for changing user two factor settings. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.user.verify_token_attempts`
<!-- semconv metric.aspnetcore.identity.user.verify_token_attempts -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.user.verify_token_attempts` | Counter | `{attempt}` | The total number of token verification attempts. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.token_purpose`](/docs/registry/attributes/aspnetcore.md) | string | What the token will be used for. | `success`; `failure` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.token_verified`](/docs/registry/attributes/aspnetcore.md) | string | The result of token verification. | `success`; `failure` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.token_purpose` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | Any token purpose that the instrumentation has no prior knowledge of. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_email` | The token is for changing the user email address. | ![Development](https://img.shields.io/badge/-development-blue) |
| `change_phone_number` | The token is for changing a user phone number. | ![Development](https://img.shields.io/badge/-development-blue) |
| `email_confirmation` | The token is for confirming user email address. | ![Development](https://img.shields.io/badge/-development-blue) |
| `reset_password` | The token is for resetting a user password. | ![Development](https://img.shields.io/badge/-development-blue) |
| `two_factor` | The token is for changing user two factor settings. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`aspnetcore.identity.token_verified` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Token verification failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Token verification was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.sign_in.authenticate.duration`
<!-- semconv metric.aspnetcore.identity.sign_in.authenticate.duration -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
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<!-- markdownlint-capture -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.authenticate.duration` | Histogram | `s` | The duration of authenticate attempts. The authenticate metrics is recorded by sign in methods such as PasswordSignInAsync and TwoFactorSignInAsync. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.authentication_scheme`](/docs/registry/attributes/aspnetcore.md) | string | The authentication scheme to sign in with. | `Identity.Application` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.sign_in.type`](/docs/registry/attributes/aspnetcore.md) | string | The authentication type. | `password`; `two_factor` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.sign_in.result`](/docs/registry/attributes/aspnetcore.md) | string | Whether the sign in result was success or failure. | `password`; `two_factor` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.sign_in.is_persistent`](/docs/registry/attributes/aspnetcore.md) | boolean | A flag indicating whether the sign in is persistent. | | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.sign_in.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Sign in failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `locked_out` | User is locked out. | ![Development](https://img.shields.io/badge/-development-blue) |
| `not_allowed` | User is not allowed to sign in. | ![Development](https://img.shields.io/badge/-development-blue) |
| `requires_two_factor` | User requires two factory authentication to sign in. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Sign in was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`aspnetcore.identity.sign_in.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `external` | Sign in with a previously registered third-party login. | ![Development](https://img.shields.io/badge/-development-blue) |
| `passkey` | Sign in with passkey. | ![Development](https://img.shields.io/badge/-development-blue) |
| `password` | Sign in with password. | ![Development](https://img.shields.io/badge/-development-blue) |
| `two_factor` | Sign in with a two factor provider. | ![Development](https://img.shields.io/badge/-development-blue) |
| `two_factor_authenticator` | Sign in with two factor authenticator app. | ![Development](https://img.shields.io/badge/-development-blue) |
| `two_factor_recovery_code` | Sign in with two factory recovery code. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.sign_in.check_password_attempts`
<!-- semconv metric.aspnetcore.identity.sign_in.check_password_attempts -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
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<!-- prettier-ignore-start -->
<!-- markdownlint-capture -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.check_password_attempts` | Counter | `{attempt}` | The total number of check password attempts. Checks that the account is in a state that can log in and that the password is valid using the UserManager.CheckPasswordAsync method. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.sign_in.result`](/docs/registry/attributes/aspnetcore.md) | string | Whether the sign in result was success or failure. | `password`; `two_factor` | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`aspnetcore.identity.sign_in.result` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `failure` | Sign in failed. | ![Development](https://img.shields.io/badge/-development-blue) |
| `locked_out` | User is locked out. | ![Development](https://img.shields.io/badge/-development-blue) |
| `not_allowed` | User is not allowed to sign in. | ![Development](https://img.shields.io/badge/-development-blue) |
| `requires_two_factor` | User requires two factory authentication to sign in. | ![Development](https://img.shields.io/badge/-development-blue) |
| `success` | Sign in was successful. | ![Development](https://img.shields.io/badge/-development-blue) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->
<!-- END AUTOGENERATED TEXT -->
<!-- endsemconv -->
### Metric: `aspnetcore.identity.sign_in.sign_ins`
<!-- semconv metric.aspnetcore.identity.sign_in.sign_ins -->
<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
<!-- see templates/registry/markdown/snippet.md.j2 -->
<!-- prettier-ignore-start -->
<!-- markdownlint-capture -->
<!-- markdownlint-disable -->
| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.sign_ins` | Counter | `{sign_in}` | The total number of calls to sign in user principals. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.authentication_scheme`](/docs/registry/attributes/aspnetcore.md) | string | The authentication scheme to sign in with. | `Identity.Application` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.sign_in.is_persistent`](/docs/registry/attributes/aspnetcore.md) | boolean | A flag indicating whether the sign in is persistent. | | `Conditionally Required` if no exception was thrown. | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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### Metric: `aspnetcore.identity.sign_in.sign_outs`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.sign_outs` | Counter | `{sign_out}` | The total number of calls to sign out user principals. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.authentication_scheme`](/docs/registry/attributes/aspnetcore.md) | string | The authentication scheme to sign in with. | `Identity.Application` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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### Metric: `aspnetcore.identity.sign_in.two_factor_clients_remembered`
<!-- semconv metric.aspnetcore.identity.sign_in.two_factor_clients_remembered -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.two_factor_clients_remembered` | Counter | `{client}` | The total number of two factor clients remembered. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.authentication_scheme`](/docs/registry/attributes/aspnetcore.md) | string | The authentication scheme to sign in with. | `Identity.Application` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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### Metric: `aspnetcore.identity.sign_in.two_factor_clients_forgotten`
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
| -------- | --------------- | ----------- | -------------- | --------- | ------ |
| `aspnetcore.identity.sign_in.two_factor_clients_forgotten` | Counter | `{client}` | The total number of two factor clients forgotten. [1] | ![Development](https://img.shields.io/badge/-development-blue) | |
**[1]:** Meter name: `Microsoft.AspNetCore.Identity`; Added in: ASP.NET Core 10.0
| Attribute | Type | Description | Examples | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`aspnetcore.authentication_scheme`](/docs/registry/attributes/aspnetcore.md) | string | The authentication scheme to sign in with. | `Identity.Application` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`aspnetcore.identity.user_type`](/docs/registry/attributes/aspnetcore.md) | string | The full name of the identity user type. | `Contoso.ContosoUser` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/registry/attributes/error.md) | string | The full name of exception type. | `System.OperationCanceledException` | `Conditionally Required` if and only if an error has occurred. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
---
`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
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[DocumentStatus]: https://opentelemetry.io/docs/specs/otel/document-status
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