You are not recognized as a user in the SAPNet R/3 Frontend

What causes this issue?

No address data exists in the SAPNet R/3 Frontend for the logon user.
The function you activated could not be executed.
Activated function,,Diagnosis
Send to SAP,,The notification was saved without
,,being sent to SAP.

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

Update notification,,The notification was not updated to
,,reflect the SAP version.
Check for changes,,The system cannot compare the R/3
,,notification with the current version
,,at SAP.
Request list of R/3,,The R/3 notifications you sent to SAP
notifications contained,,cannot be updated.
in the SAPNet R/3 Frontend,,

System Response

How to fix this error?

Contact your system administration.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.