How To Fix BGRFC129 - Communication error: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 129

• Message text: Communication error: &1

What causes this issue?

An error occurred when communicating with the destination.

System Response

The unit is temporarily locked. Once the time lock has expired, the
execution is attempted again.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Check that the destination is accessible.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC129 - Communication error: &1 ?

  The SAP error message BGRFC129 indicates a communication error in the background RFC (bRFC) framework. This error typically occurs when there is a problem with the communication between the SAP system and a remote system or when there are issues with the bRFC configuration.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the remote system.
  Configuration Errors: Incorrect configuration of the RFC destination or bRFC settings can lead to communication errors.
  System Downtime: The remote system may be down or not reachable at the time of the request.
  Authorization Issues: The user or system may not have the necessary authorizations to perform the requested operation.
  Resource Limitations: The system may be experiencing resource limitations, such as memory or processing power, which can affect communication.
  Timeouts: The request may be timing out due to long processing times or delays in the remote system.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the remote system is stable and functioning properly. You can use tools like ping or traceroute to diagnose network issues.
  Review RFC Configuration: Verify the configuration of the RFC destination in transaction SM59. Ensure that the connection parameters are correct and that the destination is set up properly.
  Check System Status: Confirm that the remote system is up and running. You can check the system logs or contact the system administrator of the remote system.
  Authorization Checks: Ensure that the user or system has the necessary authorizations to execute the bRFC calls. You can check the authorization objects related to RFC.
  Monitor System Resources: Use transaction SM50 or SM66 to monitor system resources and check for any bottlenecks or performance issues.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings for the RFC connection in transaction SM59.
  Check Logs: Review the application logs and system logs for any additional error messages or warnings that may provide more context about the issue.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  SM50 / SM66: Process Overview
  
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to bRFC communication errors.
  Documentation: Refer to SAP Help documentation for detailed information on bRFC and troubleshooting communication errors.
  
  If the issue persists after following these steps, it may be necessary to engage SAP support for further assistance.