How To Fix SDEST004 - tRFC: Inconsistent settings for response to connection errors

SAP Error Message - Details

• Message type: E = Error

• Message class: SDEST - Messages for RFC Destinations

• Message number: 004

• Message text: tRFC: Inconsistent settings for response to connection errors

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDEST004 - tRFC: Inconsistent settings for response to connection errors ?

  The SAP error message SDEST004 indicates that there are inconsistent settings for the response to connection errors in the context of a transactional RFC (tRFC) communication. This error typically arises when there are discrepancies in the configuration of the tRFC settings between the sender and receiver systems.
  Cause:
  
  Inconsistent Configuration: The sender and receiver systems may have different settings for handling connection errors. For example, one system may be set to retry on connection errors while the other may not.
  Network Issues: There may be underlying network issues that are causing communication problems between the systems.
  System Parameters: Certain system parameters related to tRFC may not be set correctly or consistently across the systems involved.
  Transport Layer Issues: Problems with the transport layer (like SAP Gateway) can also lead to this error.
  
  Solution:
  
  
  Check tRFC Settings: 
  
  Go to transaction SM59 (RFC Destinations) and verify the settings for the RFC destination used for tRFC communication. Ensure that the settings for error handling are consistent between the sender and receiver systems.
  Check the parameters related to connection errors, such as "Error Handling" and "Retry Mechanism".
  
  
  
  Review System Parameters:
  
  Use transaction RZ10 to check the profile parameters related to tRFC. Ensure that parameters like rdisp/tcp_max_conn and rdisp/tcp_max_conn are set appropriately.
  
  
  
  Network Configuration:
  
  Ensure that there are no network issues affecting the connection between the systems. This includes checking firewalls, network routes, and ensuring that both systems can communicate without interruptions.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that might address known issues or bugs related to tRFC and connection errors. Implement any recommended patches or updates.
  
  
  
  Test Connectivity:
  
  Use transaction SM58 to monitor the tRFC queue and check for any stuck or failed entries. You can also use the "Test Connection" feature in SM59 to verify that the connection is working as expected.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation for tRFC and error handling to ensure that all configurations are in line with best practices.
  
  
  
  Related Information:
  
  tRFC (Transactional RFC): A type of RFC that ensures that the data is processed exactly once in the target system, even in the case of errors.
  SM58: Transaction code used to monitor and manage tRFC queues.
  SM59: Transaction code used to configure RFC destinations.
  RZ10: Transaction code used to maintain instance profiles and parameters.
  
  If the issue persists after checking the above points, it may be beneficial to engage SAP support for further assistance, providing them with detailed logs and configuration settings for analysis.