How To Fix GMMASTERDATA123 - Select one or more lines before selecting a function

GMMASTERDATA123 - Overview

• Message type: E = Error

• Message class: GMMASTERDATA - Grant master data maintenance messages only

• Message number: 123

• Message text: Select one or more lines before selecting a function

What causes this issue?

A function button has been selected that expects one or more table rows
to operate on.

System Response

The function is not performed.

How to fix this error?

Select one or more rows of the table control by pressing the selection
column buttons, then retry the operation.

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.

GMMASTERDATA123 - Details

• The SAP error message GMMASTERDATA123 ("Select one or more lines before selecting a function") typically occurs in the context of the SAP system when you are trying to perform an action that requires you to select one or more entries in a list or table, but you haven't made any selections.
  
  Cause:
  
  No Selection Made: The most common cause of this error is that the user has not selected any rows or entries in the list or table before attempting to execute a function (like delete, edit, or process).
  Incorrect Navigation: Sometimes, users may navigate to a function without properly selecting the required data.
  User Interface Issue: There may be a temporary glitch in the user interface that prevents the selection from being registered.
  
  
  Solution:
  
  Select Entries: Ensure that you select one or more lines in the list or table before attempting to execute the desired function. You can usually do this by clicking on the