How To Fix GU921 - Differences were found between the tables -> Long text

GU921 - Overview

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 921

• Message text: Differences were found between the tables -> Long text

What causes this issue?

There were differences between the tables you compared.
These differences could be due to the following:
Error in the definition of the field movements for the conversion.
An example would be if you forgot to enter a field to be converted in
the conversion field movements (for example, BUKRS -> RBUKRS).
Intended difference
An example would be if you changed a specific field using a user exit.
Program error during the conversion
An internal program error occurred during the conversion.

How to fix this error?

Check the first two above-mentioned causes. If none of these
possibilities applies, consult your system administrator.

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 GU921 - Differences were found between the tables -> Long text ?

  The SAP error message GU921 indicates that there are differences between the tables in the system, which typically occurs during a data consistency check or when performing certain operations that require data integrity between related tables. This error can arise in various contexts, such as during the execution of a transaction, data migration, or system upgrades.
  
  Cause:
  
  Data Inconsistency: The most common cause is that the data in the related tables is not consistent. This can happen due to incomplete data updates, failed transactions, or manual data manipulation.
  
  Configuration Issues: Incorrect configuration settings in the system can lead to discrepancies between tables.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), inconsistencies may arise if the transport was not executed correctly.
  Database Issues: Corruption or issues in the database can also lead to discrepancies between tables.
  
  
  Solution:
  
  Data Consistency Check: Use transaction codes like SE14 (Database Utility) or SE11 (Data