--- title: CustomResourceValidationExpressions content_type: feature_gate _build: list: never render: false stages: - stage: alpha defaultValue: false fromVersion: "1.23" toVersion: "1.24" - stage: beta defaultValue: true fromVersion: "1.25" toVersion: "1.28" - stage: stable defaultValue: true fromVersion: "1.29" toVersion: "1.30" removed: true --- Enable expression language validation in CRD which will validate customer resource based on validation rules written in the `x-kubernetes-validations` extension.