How To Fix RY310 - RFC communication error (variance/covariance matching): &

SAP Error Message - Details

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 310

• Message text: RFC communication error (variance/covariance matching): &

What causes this issue?

An error occurred during communication with an external system.

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 RY310 - RFC communication error (variance/covariance matching): & ?

  The SAP error message RY310, which indicates an RFC (Remote Function Call) communication error related to variance/covariance matching, typically arises in the context of SAP's integration with other systems or modules. This error can occur due to various reasons, and understanding the cause is essential for troubleshooting.
  Causes of RY310 RFC Communication Error
  
  
  Network Issues: Problems with the network connection between the SAP system and the remote system can lead to RFC communication errors. This could be due to firewalls, network outages, or misconfigured network settings.
  
  
  RFC Destination Configuration: The RFC destination may not be correctly configured. This includes incorrect connection 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 perform the requested operation.
  
  
  System Load: High load on the SAP system or the remote system can lead to timeouts or failures in communication.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems or between SAP and third-party systems can also cause RFC errors.
  
  
  Transport Layer Issues: Problems with the transport layer, such as issues with the SAP Gateway or the underlying communication protocols, can lead to errors.
  
  
  Solutions to RY310 RFC Communication Error
  
  
  Check Network Connectivity: Ensure that there is a stable network connection between the SAP system and the remote system. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination: Go to transaction SM59 in SAP and check the configuration of the RFC destination. Ensure that all parameters are correct, including the connection type, target host, and user credentials.
  
  
  Review Authorizations: Ensure that the user account used for the RFC connection has the necessary authorizations to execute the required functions. You can check this in transaction SU01.
  
  
  Monitor System Load: Check the performance of both the SAP system and the remote system. If either system is under heavy load, consider optimizing performance or scheduling the operation during off-peak hours.
  
  
  Check for Version Compatibility: Ensure that the versions of the SAP systems and any third-party systems are compatible. If necessary, consult SAP notes or documentation for guidance on compatibility.
  
  
  Examine Transport Layer: Investigate any issues with the SAP Gateway or communication protocols. You can check the gateway logs for any errors that might provide more context.
  
  
  Consult SAP Notes: Search for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SM59: To manage RFC destinations.
  SM21: To check system logs for errors.
  ST22: To analyze dumps that may provide more context on the error.
  SLG1: To view application logs that might contain relevant information.
  
  
  
  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 screenshots.
  
  
  By following these steps, you should be able to diagnose and resolve the RY310 RFC communication error effectively.