How To Fix /SAPAPO/CIF054 - Inbound queue &2 (target system &1) blocked by user &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CIF -

• Message number: 054

• Message text: Inbound queue &2 (target system &1) blocked by user &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CIF054 - Inbound queue &2 (target system &1) blocked by user &3 ?

  The SAP error message /SAPAPO/CIF054 indicates that the inbound queue for a specific target system is blocked by a user. This typically occurs in the context of the Core Interface (CIF) when data is being transferred between SAP systems, such as between SAP ERP and SAP APO (Advanced Planning and Optimization).
  Cause:
  The error message is triggered when:
  
  A user has manually locked the inbound queue for the target system, preventing any further processing of messages in that queue.
  There may be a long-running process or transaction that is holding the lock on the queue.
  The user may have inadvertently blocked the queue by executing a transaction that requires exclusive access.
  
  Solution:
  To resolve the issue, you can follow these steps:
  
  
  Identify the Blocking User:
  
  Use transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to check the status of the queues.
  Look for the specific queue that is mentioned in the error message (&2 for the queue name and &1 for the target system).
  Identify the user (&3) who has locked the queue.
  
  
  
  Unlock the Queue:
  
  If you have the necessary authorizations, you can unlock the queue by:
  
  Using transaction SMQ2, select the blocked queue, and check the details.
  If the user is still logged in and the process is still running, you may need to contact the user to resolve the issue.
  If the user is no longer active, you may need to terminate the session or process that is holding the lock.
  
  
  
  
  
  Check for Long-Running Processes:
  
  Use transaction SM50 to monitor active processes and check if there are any long-running jobs that might be causing the blockage.
  If you find any, you may need to analyze and potentially terminate those processes.
  
  
  
  Reprocess the Queue:
  
  Once the queue is unlocked, you can reprocess the messages in the queue.
  Use transaction SMQ2 to manually trigger the processing of the messages if necessary.
  
  
  
  Review User Authorizations:
  
  Ensure that users have the appropriate authorizations to avoid unintentional locks in the future.
  
  
  
  Related Information:
  
  Monitoring CIF Queues: Regularly monitor CIF queues to ensure that they are not blocked and that data is flowing smoothly between systems.
  Transaction Codes:
  
  SMQ1 - Outbound Queue Monitoring
  SMQ2 - Inbound Queue Monitoring
  SM50 - Process Overview
  
  
  Documentation: Refer to SAP Help documentation for CIF and queue management for more detailed information on handling queues and troubleshooting.
  
  By following these steps, you should be able to resolve the /SAPAPO/CIF054 error and ensure that the inbound queue is functioning correctly.