How To Fix RY303 - RFC communication error: Evaluation; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 303

• Message text: RFC communication error: Evaluation; see long text

What causes this issue?

An error occurred during communication with an external system.
&V1&&V2&

System Response

How to fix this error?

Check your entries in the selected valuation rule. Fields: Target
system
, function name
Check your entries for RFC destinations using transaction SM59

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RY303 - RFC communication error: Evaluation; see long text ?

  The SAP error message RY303, which indicates an RFC (Remote Function Call) communication error, typically arises when there is a problem with the communication between SAP systems or between an SAP system and an external system. The message suggests that there is an issue with the evaluation of the RFC call, and it often requires further investigation to determine the root cause.
  Possible Causes:
  
  
  Network Issues: Problems with the network connection between the SAP systems can lead to RFC communication errors. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration of the RFC destination in the SAP system can cause communication failures. This includes incorrect settings for the target system, such as the system ID, client number, user credentials, or connection type.
  
  
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to perform the requested operation.
  
  
  System Availability: The target SAP system may be down or not reachable due to maintenance or other issues.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to RFC communication errors.
  
  
  Resource Limitations: If the SAP system is under heavy load or if there are resource limitations (e.g., memory, CPU), it may not be able to process the RFC call.
  
  
  Solutions:
  
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems involved. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination Configuration: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that all parameters (like target host, system number, client, user, and password) are correctly set.
  
  
  Check User Authorizations: Ensure that the user credentials used for the RFC call have the necessary authorizations to execute the required functions.
  
  
  System Status: Check the status of the target system to ensure it is up and running. You can do this by logging into the target system or checking system logs.
  
  
  Review Logs: Check the SAP system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that may provide more context about the issue.
  
  
  Test RFC Connection: Use the "Test Connection" feature in transaction SM59 to verify that the RFC destination is working correctly.
  
  
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to RFC communication errors.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  ST22: Dump Analysis
  SICF: HTTP Service Hierarchy
  
  
  
  Documentation: Refer to the official SAP documentation for more detailed information on RFC communication and troubleshooting.
  
  
  By following these steps, you should be able to diagnose and resolve the RFC communication error indicated by message RY303.