How To Fix GA621 - System error: Internal program data structures generated incorrectly

GA621 - Overview

• Message type: E = Error

• Message class: GA - Allocations

• Message number: 621

• Message text: System error: Internal program data structures generated incorrectly

What causes this issue?

During a transaction run, the SAP System determined that important
program data structures were generated incorrectly.

System Response

The transaction is terminated.

How to fix this error?

Inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

GA621 - Details

• The SAP error message GA621, which states "System error: Internal program data structures generated incorrectly," typically indicates an issue with the internal data structures of the SAP system. This error can arise from various causes, including:
  Causes:
  
  Data Corruption: There may be corruption in the database or in the internal data structures of the SAP application.
  Inconsistent Data: Inconsistencies in the data due to incomplete transactions or failed updates can lead to this error.
  Custom Code Issues: If there are custom developments or modifications in the system, they might not be handling data correctly, leading to this error.
  System Bugs: There could be bugs in the SAP software itself, especially if you are using an older version or have not applied the latest patches.
  
  Configuration Issues: Incorrect configuration settings in the system can also lead to this error.
  
  Solutions:
  
  Check for Notes and Patches: Look for SAP Notes related to the GA621 error in the SAP Support Portal.