How To Fix ATAB020 - Group box &3 is assigned more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: ATAB - Tabs in master data: Messages

• Message number: 020

• Message text: Group box &3 is assigned more than once

What causes this issue?

Each group box can be shown only once on a tab.

System Response

The tab layout cannot be saved.

How to fix this error?

Enter a different group box.

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 ATAB020 - Group box &3 is assigned more than once ?

  The SAP error message ATAB020 indicates that a group box (or a group of fields) is assigned more than once in a screen or a dialog. This typically occurs in the context of screen programming in SAP, particularly when using the Screen Painter or when defining screen elements in a module pool.
  Cause:
  The error arises when:
  
  A group box is defined multiple times in the same screen or dialog.
  The same group box is referenced in multiple places, leading to ambiguity in the screen layout.
  There may be a programming error where the same group box is inadvertently assigned to different screen elements.
  
  Solution:
  To resolve the ATAB020 error, you can take the following steps:
  
  
  Check Screen Definition:
  
  Open the screen in the Screen Painter (transaction SE80 or SE41).
  Verify the group boxes defined on the screen. Ensure that each group box is assigned a unique identifier and is not duplicated.
  
  
  
  Review Group Box Assignments:
  
  Look for any duplicate assignments of the same group box to different fields or elements.
  If you find duplicates, remove or modify the assignments to ensure that each group box is only assigned once.
  
  
  
  Check for Inheritance:
  
  If you are using inheritance or including other screens, ensure that the group box is not being inherited or included multiple times.
  
  
  
  Recompile the Screen:
  
  After making changes, save and activate the screen. Then, recompile the program to ensure that the changes take effect.
  
  
  
  Test the Screen:
  
  Execute the program to ensure that the error is resolved and that the screen displays correctly without any issues.
  
  
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE41 (Menu Painter), SE38 (ABAP Editor).
  Documentation: Refer to SAP Help documentation for more details on screen programming and the use of group boxes.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to screen programming and group boxes.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.