How To Fix MCEX168 - Update mode changed from unserialized V3 update -> Long text

SAP Error Message - Details

• Message type: E = Error

• Message class: MCEX - Extraction Interface LIS/BW

• Message number: 168

• Message text: Update mode changed from unserialized V3 update -> Long text

What causes this issue?

You have changed the update mode to "Unserialized V3 Update".
Note that with this mode, the delta records currently do not arrive in
the same sequence in the BW system as they were created in the OLTP
system. This can lead to problems, especially if you use ODS objects.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you expect this to be the problem, check to see if you can use the
update modes "Delta Direct" or "Delta Queued" for application &V1&.
<ZH>Important</>:
Before transporting the customizing requests for changing the update
mode in other systems, you <ZH>must</> check to see that there are no
more entries in the system in the queue MCEX&V1&. It is possible to
check the target system in the logistics queue overview (transaction
LBWQ).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MCEX168 - Update mode changed from unserialized V3 update -> Long text ?

  The SAP error message MCEX168 indicates that the update mode for a particular process has changed from an unserialized V3 update to a different mode, which is typically a long text update. This can occur in the context of the SAP system's update processing, particularly when dealing with data updates in the background.
  Cause:
  
  Configuration Changes: The update mode may have been changed due to configuration settings in the SAP system. This can happen if there are changes in the update settings or if the system is configured to handle updates differently.
  Performance Issues: If the system is experiencing performance issues, it may switch to a different update mode to manage the load more effectively.
  Data Consistency: The system may change the update mode to ensure data consistency, especially if there are issues with the data being processed.
  Custom Code: Custom ABAP code or enhancements may inadvertently cause the update mode to change.
  
  Solution:
  
  Check Configuration: Review the update configuration settings in the SAP system. Ensure that the settings for V3 updates are correctly configured.
  Monitor Performance: Analyze system performance to identify any bottlenecks or issues that may be causing the update mode to change. Use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to check for errors or warnings.
  Review Custom Code: If there are custom developments, review the code to ensure that it is not affecting the update mode. Look for any explicit changes to update modes in the code.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that can resolve the issue.
  Testing: If changes are made, conduct thorough testing to ensure that the update process works as expected without errors.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM13 (Update Records) to monitor update records and their statuses.
  SAP Documentation: Refer to SAP Help documentation for detailed information on update processing and modes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the issue persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.