How To Fix /SAPAPO/CIF_NQRFC207 - Duplicate queue lock

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CIF_NQRFC -

• Message number: 207

• Message text: Duplicate queue lock

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CIF_NQRFC207 - Duplicate queue lock ?

  The SAP error message /SAPAPO/CIF_NQRFC207 Duplicate queue lock typically occurs in the context of the CIF (Core Interface) in SAP Advanced Planning and Optimization (APO). This error indicates that there is an attempt to acquire a lock on a queue that is already locked, which can happen in scenarios involving data transfer between SAP ERP and SAP APO.
  Cause:
  
  Concurrent Processing: The error often arises when multiple processes attempt to access the same queue simultaneously, leading to a conflict.
  Long-Running Processes: If a previous process is taking too long to complete, it may hold the lock longer than expected, causing subsequent processes to fail with this error.
  System Configuration Issues: Misconfigurations in the CIF setup or in the RFC (Remote Function Call) settings can also lead to locking issues.
  Network Issues: Temporary network issues can cause delays in processing, leading to locks not being released in a timely manner.
  
  Solution:
  
  Check Active Processes: Use transaction codes like SM50 or SM66 to monitor active processes and identify if there are any long-running jobs that are holding the lock.
  Release Locks: If you identify a process that is holding the lock unnecessarily, you may need to terminate it. Be cautious when doing this, as it may lead to data inconsistencies.
  Adjust Queue Settings: Review and adjust the settings for the CIF queues to ensure they are configured correctly and can handle the expected load.
  Increase Timeout Settings: If the issue is due to long-running processes, consider increasing the timeout settings for the queues to allow more time for processing.
  Check for Configuration Issues: Review the CIF configuration in both the ERP and APO systems to ensure that they are set up correctly and that there are no discrepancies.
  System Performance: Monitor system performance and consider optimizing it if you frequently encounter locking issues. This may involve hardware upgrades or tuning database performance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SMQ1 (for outbound queues) and SMQ2 (for inbound queues) to monitor and manage queues.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the SAP documentation on CIF and APO for best practices in configuration and troubleshooting.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or your system administrator for further assistance.