How To Fix SR077 - Entry &1 can be deleted in SMQ1 only (mismatch between tRFC and qRFC)

SAP Error Message - Details

• Message type: E = Error

• Message class: SR - RFC utilities

• Message number: 077

• Message text: Entry &1 can be deleted in SMQ1 only (mismatch between tRFC and qRFC)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SR077 - Entry &1 can be deleted in SMQ1 only (mismatch between tRFC and qRFC) ?

  The SAP error message SR077 indicates that there is a mismatch between the transactional Remote Function Call (tRFC) and the queued Remote Function Call (qRFC) in the system. This typically occurs when there are inconsistencies in the processing of asynchronous calls, particularly when dealing with the qRFC queue in transaction SMQ1.
  Cause:
  
  
  Inconsistent Queue Entries: The error arises when there are entries in the qRFC queue (SMQ1) that do not have a corresponding entry in the tRFC table. This can happen due to various reasons, such as:
  
  A failure in processing a tRFC call that was supposed to create a qRFC entry.
  Manual deletion or corruption of entries in the tRFC or qRFC tables.
  Network issues or system crashes that disrupt the normal processing of these calls.
  
  
  
  Configuration Issues: Incorrect configuration of the RFC destinations or the logical systems can also lead to mismatches.
  
  
  Solution:
  To resolve the SR077 error, you can follow these steps:
  
  
  Check the Queue: 
  
  Go to transaction SMQ1 and check the entries in the qRFC queue. Identify the specific entry that is causing the issue.
  
  
  
  Analyze tRFC Entries:
  
  Use transaction SM58 to check the tRFC entries. Look for any failed or inconsistent entries that correspond to the qRFC entry in question.
  
  
  
  Delete Inconsistent Entries:
  
  If you find that the qRFC entry does not have a corresponding tRFC entry, you can delete the problematic entry from the qRFC queue. However, ensure that you understand the implications of deleting this entry, as it may affect the processing of related transactions.
  
  
  
  Reprocess Failed Entries:
  
  If there are failed tRFC entries, you may need to reprocess them. You can do this from transaction SM58 by selecting the failed entries and choosing the option to reprocess.
  
  
  
  Check Configuration:
  
  Verify the configuration of your RFC destinations and logical systems to ensure they are set up correctly. This includes checking the settings in transaction SM59.
  
  
  
  Monitor System Logs:
  
  Check the system logs (transaction SLG1) for any related error messages that might provide additional context or clues about the underlying issue.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  tRFC: Transactional RFC is used for synchronous communication between SAP systems, ensuring that the data is processed reliably.
  qRFC: Queued RFC is used for asynchronous communication, allowing for the queuing of requests that can be processed later.
  SMQ1: Transaction code for monitoring the qRFC queue.
  SM58: Transaction code for monitoring the tRFC queue.
  SLG1: Transaction code for viewing application logs.
  
  If the issue persists after following these steps, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.