How To Fix SCA_DS064 - Communication failure for RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SCA_DS - Datasource

• Message number: 064

• Message text: Communication failure for RFC destination &1

What causes this issue?

Destination &V1& could not be reached.
Problem reported by RFC Layer
&V2&&V3&&V4&

Procedure for System Administrators

Correct the RFC destination or make sure the server is reachable.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SCA_DS064 - Communication failure for RFC destination &1 ?

  The SAP error message SCA_DS064 indicates a communication failure for a Remote Function Call (RFC) destination. This error typically arises when there is an issue with the connection between the SAP system and the target system specified in the RFC destination.
  Causes of the Error
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system. This could be due to firewalls, routing issues, or network outages.
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly. This includes incorrect hostnames, IP addresses, or ports.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  Target System Down: The target system may be down or not reachable due to maintenance or other issues.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  
  Timeout Settings: The timeout settings for the RFC connection may be too short, causing the connection to fail before it can be established.
  
  
  Solutions
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to check if the target system is reachable from the SAP system.
  Ensure that there are no firewall rules blocking the communication.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination for correctness (hostname, service, user credentials).
  Test the connection using the "Connection Test" button in SM59.
  
  
  
  Check User Authorizations:
  
  Ensure that the user specified in the RFC destination has the necessary authorizations to access the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running. If it is down, coordinate with the system administrators to resolve the issue.
  
  
  
  Review SAP Gateway Configuration:
  
  Ensure that the SAP Gateway is running and properly configured. You can check the status using transaction SMGW.
  
  
  
  Adjust Timeout Settings:
  
  If the connection is timing out, consider increasing the timeout settings in the RFC destination configuration.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages that may provide more context.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SMGW: SAP Gateway Monitor
  SM21: System Log
  ST22: Dump Analysis
  
  
  
  Documentation: Refer to SAP Help documentation for more details on RFC connections and troubleshooting.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to RFC communication failures.
  
  
  By following these steps, you should be able to diagnose and resolve the communication failure indicated by the SCA_DS064 error message.