No authorization for executing UI model &1

What causes this issue?

Validating your authorization against the authorization object USMD_UI
showed that you are <ZH>not</> authorized to execute the UI model.

System Response

The UI model cannot be executed.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Before you can execute the UI model, your system administrator must
extend your authorization profile accordingly.

Error message extract from SAP system. Copyright SAP SE.