How To Fix SCRM056 - RFC: Problem during connection setup or communication

SAP Error Message - Details

• Message type: E = Error

• Message class: SCRM - Check Results Management

• Message number: 056

• Message text: RFC: Problem during connection setup or communication

What causes this issue?

A connection setup or communication problem occurred when the function
module &V1& was called through RFC using RFC destination &V2&.
Error: &V3&.

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 SCRM056 - RFC: Problem during connection setup or communication ?

  The SAP error message SCRM056 indicates that there is a problem during the setup of a Remote Function Call (RFC) connection or during communication with the remote system. This error can arise from various issues, and understanding the cause is essential for troubleshooting. Here are some common causes, potential solutions, and related information:
  Causes:
  
  
  Network Issues: There may be network connectivity problems between the SAP systems. This could include firewalls blocking the connection, incorrect network configurations, or issues with the network itself.
  
  
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect parameters such as the target system's IP address, port number, or user credentials.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running on the target system, or there may be issues with the gateway configuration.
  
  
  Version Compatibility: There may be compatibility issues between different SAP versions or components.
  
  
  Timeout Settings: The timeout settings for the RFC connection may be too low, causing the connection to fail if the response takes longer than expected.
  
  
  Solutions:
  
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection parameters (like the target host, service, and user credentials) are correct.
  
  
  Test the Connection: In transaction SM59, you can test the RFC connection to see if it is working. This will help identify if the issue is with the connection setup.
  
  
  Check User Authorizations: Ensure that the user used for the RFC connection has the necessary authorizations in both the source and target systems.
  
  
  Review Gateway Configuration: Check if the SAP Gateway is running on the target system. You can use transaction SMGW to monitor the gateway and check for any errors.
  
  
  Adjust Timeout Settings: If you suspect that the timeout settings are too low, you can adjust them in the RFC destination settings.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that might address known issues related to the error message SCRM056. SAP frequently updates its knowledge base with solutions to common problems.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SMGW: SAP Gateway Monitor
  ST22: Dump Analysis (to check for any ABAP runtime errors)
  SICF: HTTP Service Hierarchy (if using HTTP connections)
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs or traces that may help diagnose the problem.
  
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the SCRM056 error.