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Upgrade is not compatible with revisions (#8447) 

* Upgrade is not compatible with revisions

* correction

* fix typo

Co-authored-by: Frank Budinsky <frankb@ca.ibm.com>

Co-authored-by: Frank Budinsky <frankb@ca.ibm.com>
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Shamsher Ansari 2020-11-09 20:57:51 +05:30 committed by GitHub
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content/en/docs/setup/upgrade/in-place/index.md
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@ -17,6 +17,11 @@ The upgrade command can also perform a downgrade of Istio.
See the [`istioctl` upgrade reference](/docs/reference/commands/istioctl/#istioctl-upgrade)
for all the options provided by the `istioctl upgrade` command.
{{< warning >}}
`istioctl upgrade` is for in-place upgrade and not compatible with installations done with
the `--revision` flag. Upgrades of such installations will fail with an error.
{{< /warning >}}
## Upgrade prerequisites
Before you begin the upgrade process, check the following prerequisites: