How To Fix UD644 - List not changed ( action interrupted or hit list empty )

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 644

• Message text: List not changed ( action interrupted or hit list empty )

What causes this issue?

Filtering by data model was manually cancelled, or returned
an empty set of entity types.

System Response

The list has not been changed.

How to fix this error?

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 UD644 - List not changed ( action interrupted or hit list empty ) ?

  The SAP error message UD644, which states "List not changed (action interrupted or hit list empty)," typically occurs in the context of executing a report or transaction that generates a list of data, but the system is unable to process the request due to certain conditions. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Empty Hit List: The most common reason for this error is that the selection criteria used in the report or transaction did not return any results, leading to an empty hit list.
  Action Interrupted: The action you were trying to perform (like deleting, changing, or processing records) was interrupted, possibly due to a system error or user cancellation.
  Authorization Issues: Lack of proper authorizations to view or manipulate the data can also lead to this error.
  Data Locking: If the data you are trying to access is locked by another user or process, it may prevent the action from being completed.
  Technical Issues: There could be underlying technical issues, such as problems with the database or the application server.
  
  Solutions:
  
  Check Selection Criteria: Review the selection criteria you used to ensure they are correct and that they should return results. Adjust the criteria if necessary.
  Re-run the Report: If the hit list was empty due to a temporary issue, try re-running the report or transaction.
  Check Authorizations: Ensure that you have the necessary authorizations to access the data or perform the action you are attempting.
  Data Locking: If you suspect data locking, check if another user is currently accessing the same data. You may need to wait until the lock is released.
  Review Logs: Check the system logs (transaction SM21) for any related error messages that could provide more context about the issue.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting the SAP Notes for any known issues related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SM37 (Job Monitoring), SM21 (System Log), and SU53 (Authorization Check).
  SAP Notes: Search for SAP Notes related to error UD644 in the SAP Support Portal for any specific patches or updates that may address the issue.
  Documentation: Review the documentation for the specific report or transaction you are using to understand its requirements and limitations.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the UD644 error message in SAP.