ally correct.</p><p>If one or more fields in your configurations are unknown or have wrong types, they will be rejected by the Kubernetes API server when you create or modify Istio resources. This feature, <code>CustomResourceValidation</code>, is on by default for Kubernetes 1.9+ clusters. Please note that existing configurations already in Kubernetes are <strong>NOT</strong> affected if they stay unchanged.</p><p>To help with your upgrade, here are some steps you could take:</p><ul><li>After upgrading Ist