How To Fix 0D644 - RFC cannot be executed: posting run is running

SAP Error Message - Details

• Message type: E = Error

• Message class: 0D - FS-CD General Messages

• Message number: 644

• Message text: RFC cannot be executed: posting run is running

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Smart SAP Assistant

• What is the cause and solution for SAP error message 0D644 - RFC cannot be executed: posting run is running ?

  The SAP error message "0D644 RFC cannot be executed: posting run is running" typically occurs when there is an attempt to execute a Remote Function Call (RFC) while a posting run is already in progress. This can happen in various SAP modules, particularly in financial or logistics processes where batch jobs or posting runs are common.
  Cause:
  
  Concurrent Posting Runs: The error indicates that a posting run (such as a batch job for posting documents) is currently active. This prevents other RFC calls from being executed until the posting run is completed.
  Locking Mechanism: SAP uses a locking mechanism to ensure data integrity during posting runs. If an RFC call is made while the system is locked for a posting run, the error will be triggered.
  Long-Running Jobs: If the posting run takes longer than expected, it can lead to this error if other processes try to execute RFC calls during that time.
  
  Solution:
  
  Wait for Completion: The simplest solution is to wait for the current posting run to complete. You can monitor the status of the posting run in transaction codes like SM37 (Job Monitoring) to see if it is still running.
  Check for Long-Running Jobs: If the posting run is taking too long, investigate the job to see if there are any issues causing delays. You may need to analyze logs or check for any errors in the job.
  Reschedule Jobs: If possible, reschedule the RFC calls or jobs that are trying to execute during the posting run to a time when the posting run is not active.
  Adjust Job Scheduling: Review the scheduling of posting runs and other jobs to avoid conflicts. Ensure that they are not scheduled to run at the same time.
  System Configuration: In some cases, you may need to review system settings or configurations related to job scheduling and RFC execution to optimize performance and avoid such conflicts.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM37 (to monitor jobs), SM21 (to check system logs), and ST22 (to check dumps) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to the specific module you are working with, as the context of the posting run may vary between modules (e.g., FI, MM, SD).
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult with SAP support for further assistance.