How To Fix UMC048 - RFC error when calling up BW system; see help text

SAP Error Message - Details

• Message type: E = Error

• Message class: UMC - General Messages

• Message number: 048

• Message text: RFC error when calling up BW system; see help text

What causes this issue?

Error when calling an <DS:GLOS.3526AFF8AFAB52B9E10000009B38F974>RFC </>
connection:
&V1&&V2&&V3&&V4&

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?

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 UMC048 - RFC error when calling up BW system; see help text ?

  The SAP error message UMC048 typically indicates an RFC (Remote Function Call) error when trying to connect to a BW (Business Warehouse) system. This error can occur due to various reasons, and understanding the cause is essential for troubleshooting. Here are some common causes, potential solutions, and related information:
  Causes of UMC048 RFC Error
  
  
  Network Issues: There may be network connectivity problems between the systems involved (e.g., between the source system and the BW system).
  
  
  RFC Destination Configuration: The RFC destination in the SAP system may not be configured correctly. This includes incorrect connection parameters, such as the target system's IP address, system number, or client.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the BW system.
  
  
  System Availability: The BW system may be down or not reachable due to maintenance or other issues.
  
  
  SAP Gateway Issues: Problems with the SAP Gateway service can also lead to RFC errors.
  
  
  Version Compatibility: There may be compatibility issues between the source and target systems, especially if they are running different versions of SAP.
  
  
  Solutions
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the source system can reach the BW system.
  Ensure that firewalls or network policies are not blocking the connection.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination.
  Test the connection from SM59 to ensure it is working correctly.
  
  
  
  Check User Authorizations:
  
  Ensure that the user ID used for the RFC connection has the necessary authorizations in the BW system.
  You can check user roles and authorizations using transaction SU01.
  
  
  
  Check System Status:
  
  Verify that the BW system is up and running. You can check this in the SAP system status or by contacting your Basis team.
  
  
  
  Review SAP Gateway Configuration:
  
  Ensure that the SAP Gateway is properly configured and running. You can check the status of the gateway using transaction SMGW.
  
  
  
  Check for Version Compatibility:
  
  Ensure that both systems are compatible in terms of SAP versions and patches. Consult SAP notes or documentation for any known issues.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to UMC048 for any specific fixes or recommendations provided by SAP.
  Transaction Codes:
  
  SM59: For managing RFC destinations.
  SU01: For user management and authorization checks.
  SMGW: For monitoring the SAP Gateway.
  
  
  Logs: Review system logs (transaction SM21) for any additional error messages that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.