How To Fix RSBBS101 - Communication error when calling a function in source system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBBS - BW: Reports-Reports-Interface

• Message number: 101

• Message text: Communication error when calling a function in source system &1

What causes this issue?

To create SAP systems as recipients you need functions in source system
&V1&. A communication error occurred during call-up.

System Response

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

How to fix this error?

Check the connection the the source system by using the transaction
SM59.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSBBS101 - Communication error when calling a function in source system &1 ?

  The SAP error message RSBBS101 indicates a communication error when trying to call a function in a source system. This error typically occurs in the context of SAP Business Warehouse (BW) when there is an issue with the connection between the BW system and the source system (which could be an SAP ERP system or another data source).
  Causes of RSBBS101
  
  Network Issues: There may be network connectivity problems between the BW system and the source system.
  RFC Connection Problems: The Remote Function Call (RFC) connection might be incorrectly configured or not functioning properly.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the source system.
  Source System Down: The source system might be down or not reachable due to maintenance or other issues.
  Function Module Issues: The specific function module being called may not exist or may have been changed in the source system.
  Timeouts: The call may be timing out due to long processing times or heavy load on the source system.
  
  Solutions for RSBBS101
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the BW system and the source system is stable and functioning. You can use tools like ping or traceroute to test connectivity.
  
  
  
  Verify RFC Connection:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination used to connect to the source system. Test the connection to ensure it is working properly.
  
  
  
  Check Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in the source system. You may need to consult with your security team to verify this.
  
  
  
  Check Source System Status:
  
  Verify that the source system is up and running. If it is down for maintenance, you may need to wait until it is back online.
  
  
  
  Review Function Module:
  
  Check if the function module being called exists in the source system and is functioning correctly. You can do this by using transaction SE37 to look up the function module.
  
  
  
  Increase Timeout Settings:
  
  If the issue is related to timeouts, consider increasing the timeout settings for the RFC connection in transaction SM59.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that may provide more context about the issue.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  SE37: Function Module
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Documentation: Review the SAP BW documentation for best practices on setting up and maintaining connections to source systems.
  
  
  By following these steps, you should be able to diagnose and resolve the RSBBS101 error effectively. If the problem persists, consider reaching out to SAP support for further assistance.