AzureDeployment Environment Dev center setup failing with key vault Integration

I was trying to create a Azuredeployment environment and Dev center with in it. When I am trying to create a catalog within the Devcenter using the keyvault integration (with private endpoint enabled), the catalog creation is failing.

> We couldn't connect to ade-zzzzzzz. The DevCenter is misconfigured. Inform DevCenter owners that the key vault could not be found, and is required for this operation.

We already created a system managed identity for the devcenter and add thed the system managed identity to full permission for the secret in the keyvault. But still the catalog creation is failing. So a private keyvault is not supported with AzureDeployment environment?