Please refer to these documents and see if this helps.
To get details about the policy that blocked your cluster deployment operation, see RequestDisallowedByPolicy error with Azure resource policy.
To resolve the RequestDisallowedByPolicy
error when deploying an ARM template or Bicep file, you need to find which policy is blocking the deployment. Within that policy, you need to review the rules so you can update your deployment to comply with the policy.
The error message includes the names of the policy definition and policy assignment that caused the error. You need these names to get more information about the policy.
To get more information about a policy definition, use az policy definition show.
az policy definition show --name
To get more information about a policy assignment, use az policy assignment show.
az policy assignment show --name
Within the policy definition, you see a description of the policy and the rules that are applied. Review the rules and update your ARM template or Bicep file to comply with the rules. For example, if the rule states the public network access is disabled, you need to update the corresponding resource properties.
Let me know in the comments if this doesn't help and I can involve the right teams for investigation.
Thanks.