enablePurgeProtection cannot be set to false

[chrisking81]

Hi,

I've been attempting to deploy this, but disabled purge protection (solely for testing purposes), however the deployment always fails and doesn't get beyond the key vault deployment.

"code":"DeploymentFailed","message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see
https://aka.ms/arm-deployment-operations
for usage details.","details":[{"code":"BadRequest","message":"{\r\n "error": {\r\n "code": "BadRequest",\r\n "message": "The property \"enablePurgeProtection\" cannot be set to false. Enabling the purge protection for a vault is an irreversible action."\r\n }\r\n}"}]}]}]}

Is this no longer an optional setting?