How To Fix /PF1/MSG_ASYC_POLLER040 - Communication error while calling RFC; check RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_ASYC_POLLER -

• Message number: 040

• Message text: Communication error while calling RFC; check RFC destination &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_ASYC_POLLER040 - Communication error while calling RFC; check RFC destination &1 ?

  The SAP error message /PF1/MSG_ASYC_POLLER040 Communication error while calling RFC; check RFC destination &1 typically indicates that there is a communication issue when trying to call a Remote Function Call (RFC) to a specified destination. This can occur for various reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  RFC Destination Configuration: The RFC destination specified in the error message may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity issues between the SAP system and the target system.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations.
  Target System Down: The target system may be down or not reachable.
  Firewall Issues: Firewalls may be blocking the communication between the systems.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination mentioned in the error message.
  Verify that the configuration is correct (e.g., connection type, target host, system number, etc.).
  
  
  
  Test Connection:
  
  In SM59, select the RFC destination and use the "Connection Test" option to check if the connection is working.
  If the test fails, check the error message for more details.
  
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the SAP system and the target system is stable and operational.
  Use tools like ping or traceroute to diagnose network issues.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC call have the necessary authorizations to access the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running and that the relevant services are active.
  
  
  
  Firewall Configuration:
  
  Check if there are any firewall rules that might be blocking the communication between the two systems.
  
  
  
  SAP Gateway Configuration:
  
  Ensure that the SAP Gateway service is running on both the source and target systems.
  Check the gateway logs for any errors.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SMGW: Gateway Monitor
  SICF: HTTP Service Hierarchy
  ST22: Dump Analysis (to check for any ABAP runtime errors)
  
  
  
  Logs:
  
  Check the system logs (SM21) for any related error messages.
  Review the developer trace files (ST11) for more detailed information.
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC communication errors.
  
  
  By following these steps, you should be able to diagnose and resolve the communication error indicated by the message /PF1/MSG_ASYC_POLLER040. If the issue persists, consider reaching out to your SAP Basis team or SAP support for further assistance.