How To Fix CNV_IUUC_REPLICATION031 - RFC-connection error

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPLICATION - IUUC replication messages (HANA)

• Message number: 031

• Message text: RFC-connection error

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION031 - RFC-connection error ?

  The SAP error message CNV_IUUC_REPLICATION031 typically indicates an issue with the RFC (Remote Function Call) connection during the data replication process, particularly in the context of SAP Landscape Transformation (SLT) or SAP Data Services. This error can occur for various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the source and target systems.
  RFC Destination Configuration: The RFC destination may not be correctly configured or may be missing.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Incorrect Parameters: The parameters set in the SLT configuration might be incorrect or incomplete.
  Firewall Restrictions: Firewalls may be blocking the required ports for RFC communication.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that both systems can communicate over the network. You can use tools like ping or telnet to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that it is set up correctly and test the connection.
  
  
  
  Review User Authorizations:
  
  Ensure that the user used for the RFC connection has the necessary authorizations to perform the required operations. Check roles and profiles assigned to the user.
  
  
  
  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.
  
  
  
  Review SLT Configuration:
  
  Check the SLT configuration settings in transaction LTRC. Ensure that all parameters are correctly set and that the configuration is active.
  
  
  
  Firewall and Security Settings:
  
  If applicable, check firewall settings to ensure that the required ports for RFC communication (usually TCP port 3200 for SAP) are open.
  
  
  
  Check Logs:
  
  Review the logs in transaction SLG1 for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error. You can search the SAP Support Portal for notes related to CNV_IUUC_REPLICATION031.
  Documentation: Review the official SAP documentation for SLT or the specific data replication technology you are using for any additional troubleshooting steps.
  SAP Community: Consider searching or posting in the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the CNV_IUUC_REPLICATION031 RFC connection error. If the issue persists, consider reaching out to SAP support for further assistance.