How To Fix CMCB_MSG335 - Cannot lock task

SAP Error Message - Details

• Message type: E = Error

• Message class: CMCB_MSG - Cash Budgeting Message Class

• Message number: 335

• Message text: Cannot lock task

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMCB_MSG335 - Cannot lock task ?

  The SAP error message CMCB_MSG335: Cannot lock task typically occurs in the context of SAP Business Workflow or SAP Business Process Management (BPM) when there is an issue with locking a task or process instance. This can happen for various reasons, including concurrent access, system performance issues, or configuration problems.
  Causes:
  
  Concurrent Access: Multiple users or processes may be trying to access or modify the same task simultaneously, leading to a locking conflict.
  Database Locking: The database may have a lock on the task due to a previous transaction that has not been completed or released.
  System Performance Issues: High load on the system can lead to delays in processing, causing timeouts or locking issues.
  Configuration Issues: Incorrect configuration of the workflow or task management settings can lead to locking problems.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, preventing other tasks from being processed.
  
  Solutions:
  
  Check for Concurrent Users: Identify if multiple users are trying to access the same task. If so, coordinate to avoid conflicts.
  Release Locks: If you suspect that a lock is being held unnecessarily, you may need to release it manually. This can often be done through transaction codes like SM12 (for lock entries) in the SAP GUI.
  Review System Performance: Monitor system performance and check for any bottlenecks. You may need to optimize database performance or increase system resources.
  Adjust Timeout Settings: If the issue is related to timeouts, consider adjusting the timeout settings for the workflow or task management.
  Check Workflow Configuration: Review the configuration of the workflow or task management settings to ensure they are set up correctly.
  Consult Logs: Check the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific scenarios related to CMCB_MSG335.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for Business Workflow or BPM for best practices and troubleshooting steps.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.