A cloud-based identity and access management service for securing user authentication and resource access
If you are unable to create a client secret key due to a tenant-wide policy, it indicates that the application management policy in your organization is enforcing restrictions on the creation of client secrets. To confirm that the policy is applied, you can check the default application management policy and see if the restrictions are enforced. If this is your first time applying such a policy, the id field should change to a new GUID, indicating the policy has been created.
To resolve this issue, you may need to review the application management policies set for your tenant. If the policy blocks the creation of client secrets, consider using alternative authentication methods, such as certificate credentials, which can provide added security.
You can also create a new application and verify if the restrictions are enforced by attempting to create a client secret or symmetric key, which should result in an error if the policy is active.