No form has been assigned to notification abbreviation &

What causes this issue?

In table T77VD no form has been assigned to the notification
abbreviation. However, you require a form as a reference to copy from.

System Response

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

How to fix this error?

Check the settings in table T77VD 'User-specific output control'.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.