How To Fix RY301 - RFC communication error: Transaction analysis; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 301

• Message text: RFC communication error: Transaction analysis; see long text

What causes this issue?

An error occurred during communication with an external system.

How to fix this error?

Check your entries in the relevant valuation rule (fields: target
system, function name).
Check your entries for the 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 RY301 - RFC communication error: Transaction analysis; see long text ?

  The SAP error message RY301, which indicates an "RFC communication error," typically arises during Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can occur for various reasons, and understanding the cause is essential for troubleshooting.
  Causes of RY301 RFC Communication Error
  
  
  Network Issues: Problems with the network connection between the systems can lead to communication failures. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration of RFC destinations in the SAP system can cause communication errors. This includes incorrect settings in the RFC destination (transaction SM59).
  
  
  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 system may be down or not reachable, which can happen during maintenance or due to unexpected outages.
  
  
  Timeouts: If the RFC call takes too long to respond, it may time out, leading to this error.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to communication issues.
  
  
  Solutions to RY301 RFC Communication Error
  
  
  Check Network Connectivity: Ensure that there is a stable network connection between the systems. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination.
  Ensure that the connection type is correct (e.g., TCP/IP).
  Test the connection using the "Connection Test" button in SM59.
  
  
  
  Review Authorizations: Check the user credentials being used for the RFC call. Ensure that the user has the necessary authorizations to execute the function module or transaction.
  
  
  Check System Status: Verify that the target system is up and running. You can check the system status in transaction SM51 or by logging into the target system directly.
  
  
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the RFC destination configuration.
  
  
  Check for System Updates: Ensure that both systems are updated to compatible versions. If there are known issues with specific versions, consider applying patches or updates.
  
  
  Review Logs: Check the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages that may provide more context about the issue.
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SM51: List of Active Instances
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC communication errors.
  
  
  Documentation: Review SAP documentation for RFC communication and troubleshooting guidelines.
  
  
  By following these steps, you should be able to identify and resolve the cause of the RY301 RFC communication error. If the issue persists, consider reaching out to SAP support for further assistance.