How To Fix /SEHS/BA_MISC1199 - Buffer lock modes differ (&1 <> &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SEHS/BA_MISC1 -

• Message number: 199

• Message text: Buffer lock modes differ (&1 <> &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SEHS/BA_MISC1199 - Buffer lock modes differ (&1 <> &2) ?

  The SAP error message /SEHS/BA_MISC1199 Buffer lock modes differ (&1 <> &2) typically occurs in the context of SAP's buffer management, particularly when there is a conflict in the lock modes of the buffer entries. This can happen in various scenarios, such as when multiple processes are trying to access or modify the same data in different ways.
  Cause:
  The error indicates that there is a mismatch in the lock modes for a specific buffer entry. The two lock modes represented by &1 and &2 are different, which means that one process is trying to access the data in a mode that is incompatible with the mode that another process is using. For example, one process might be trying to read the data while another is trying to write to it.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Identify the Processes: Use transaction codes like SM50 or SM66 to monitor the active processes in the system. Look for any long-running or stuck processes that might be holding locks on the buffer.
  
  
  Check Lock Entries: Use transaction code SM12 to check for any lock entries that might be causing the conflict. You can delete any unnecessary locks if they are no longer needed.
  
  
  Review Code: If this error is occurring due to custom code or a specific transaction, review the code to ensure that it is handling locks appropriately. Ensure that the lock modes are compatible and that the code is not trying to access the same data in conflicting ways.
  
  
  Buffer Management: If the issue persists, consider reviewing the buffer settings in the SAP system. You may need to adjust the buffer parameters or clear the buffer to resolve any inconsistencies.
  
  
  System Restart: In some cases, a system restart may help clear any lingering locks or buffer issues.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error message. There may be patches or updates that can resolve underlying issues.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM50 (Process Overview), SM66 (Global Process Overview), and SM12 (Lock Entries) for monitoring and managing processes and locks.
  SAP Documentation: Review SAP documentation related to buffer management and locking mechanisms to understand how they work and how to troubleshoot related issues.
  Performance Monitoring: Regularly monitor system performance and locking behavior to prevent similar issues in the future.
  
  If the problem continues after trying these solutions, it may be beneficial to reach out to SAP support for further assistance.