No authorization for this transaction

What causes this issue?

The authorization check for transaction &TCODE& was not successful.

System Response

User &UNAME& does not have authorization for transaction &TCODE&.

How to fix this error?

Inform the system administrator.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.