How To Fix WAB168 - Process lock is not supported for parallel processing on document level

SAP Error Message - Details

• Message type: E = Error

• Message class: WAB - Messages Settlement Management

• Message number: 168

• Message text: Process lock is not supported for parallel processing on document level

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WAB168 - Process lock is not supported for parallel processing on document level ?

  The SAP error message WAB168 indicates that a process lock is not supported for parallel processing at the document level. This typically occurs in scenarios where multiple processes are trying to access or modify the same document simultaneously, which can lead to data inconsistencies or conflicts.
  Cause:
  
  Parallel Processing: The error arises when multiple instances of a program or transaction are trying to process the same document at the same time. SAP does not allow this to prevent data integrity issues.
  Lock Mechanism: SAP uses a locking mechanism to ensure that only one process can modify a document at a time. If a document is already locked by one process, other processes attempting to access it will encounter this error.
  Configuration Issues: Sometimes, the configuration of the system or the way the processes are set up can lead to this error.
  
  Solution:
  
  Sequential Processing: Ensure that the processes that are trying to access the same document are executed sequentially rather than in parallel. This can be done by implementing a queuing mechanism or adjusting the program logic to avoid simultaneous access.
  Review Custom Code: If you have custom ABAP code that processes documents, review it to ensure that it properly handles locking and does not attempt to process the same document in parallel.
  Increase Lock Timeout: In some cases, increasing the lock timeout settings in the SAP system may help, but this is generally a workaround rather than a solution.
  Check for Long-Running Transactions: Identify if there are any long-running transactions that might be holding locks for an extended period. Optimizing these transactions can help reduce the likelihood of encountering this error.
  Use Background Jobs: If applicable, consider using background jobs for processing documents instead of executing them in parallel in the foreground.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error. SAP frequently releases updates that may address known issues.
  Transaction Codes: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) to diagnose and monitor locking issues.
  Documentation: Review SAP documentation related to locking mechanisms and parallel processing to better understand how to manage document access in your specific scenario.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or development team for further investigation and resolution.