How To Fix USMD6136 - RFC communication error

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD6 - Messages for Data Transfer

• Message number: 136

• Message text: RFC communication error

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 USMD6136 - RFC communication error ?

  The SAP error message USMD6136, which indicates an "RFC communication error," typically arises during Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can occur for various reasons, and understanding the cause is essential for troubleshooting.
  Causes of USMD6136 RFC Communication Error
  
  
  Network Issues: Problems with the network connection between the systems can lead to communication failures. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration of RFC destinations in the SAP system can lead to communication errors. This includes incorrect settings in transaction SM59.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  
  
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  
  
  Timeouts: If the RFC call takes too long to respond, it may time out, leading to this error.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also cause communication issues.
  
  
  Solutions to USMD6136 RFC Communication Error
  
  
  Check Network Connectivity:
  
  Ensure that both systems can communicate over the network. You can use tools like ping or traceroute to check connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the connection type, target host, and system number are correctly configured.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Review Authorizations:
  
  Ensure that the user used for the RFC connection has the necessary authorizations to execute the required functions.
  
  
  
  Check System Status:
  
  Verify that the target system is up and running. You can check the system status in the SAP GUI or through system monitoring tools.
  
  
  
  Increase Timeout Settings:
  
  If timeouts are an issue, consider increasing the timeout settings in the RFC destination configuration.
  
  
  
  Check for SAP Notes:
  
  Look for any relevant SAP Notes that might address known issues related to RFC communication errors. You can search the SAP Support Portal for updates or patches.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that might provide more context.
  
  
  
  Consult with Basis Team:
  
  If the issue persists, it may be necessary to involve your SAP Basis team for deeper analysis and troubleshooting.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  ST01: System Trace
  ST11: Developer Traces
  
  
  
  SAP Notes: Always check the SAP Support Portal for the latest notes related to RFC communication issues.
  
  
  By following these steps, you should be able to identify and resolve the cause of the USMD6136 RFC communication error.