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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message GMMASTERDATA123 - Select one or more lines before selecting a function ?

  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 checkbox next to the entries or by highlighting the rows.
  Check for Filters: If you are using filters or search criteria, make sure that they are set correctly and that there are visible entries to select.
  Refresh the Screen: If you suspect a UI issue, try refreshing the screen or navigating away and back to the relevant transaction.
  Review Permissions: Ensure that you have the necessary permissions to perform the action you are trying to execute.
  Consult Documentation: If the issue persists, refer to SAP documentation or help resources for the specific transaction you are using, as there may be additional requirements or steps.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to General Ledger, Material Management, or other modules where master data is managed.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Training: If this error is common among users, consider providing additional training on how to properly select entries in SAP.
  
  If the problem continues after trying these solutions, it may be beneficial to contact your SAP support team for further assistance.