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

ATAB020 - Overview

• 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