How To Fix GA120 - No document data found for reversal

GA120 - Overview

• Message type: E = Error

• Message class: GA - Allocations

• Message number: 120

• Message text: No document data found for reversal

What causes this issue?

To reverse an allocation, the SAP System reads the original document.
In this case the system could not locate the document so reversal was
not possible.

Error message extract from SAP system. Copyright SAP SE.

GA120 - Details

• The SAP error message GA120 ("No document data found for reversal") typically occurs when you attempt to reverse a financial document (such as a journal entry or invoice) in the SAP system, but the system cannot find the original document to reverse. This can happen for several reasons. Below are some common causes, potential solutions, and related information:
  Causes:
  
  Document Not Found: The original document may have been deleted or does not exist in the system.
  Incorrect Document Number: The document number you are trying to reverse may be incorrect or mistyped.
  Document Already Reversed: The document may have already been reversed, and thus there is no data available for a second reversal.
  Authorization Issues: The user may not have the necessary permissions to view or reverse the document.
  Document Status: The document may be in a status that does not allow for reversal (e.g., it may be locked or in a closed period).
  Posting Period Issues: