How To Fix CNV_IUUC_REPLICATION121 - Source system not available; user &1 confirmed they want to proceed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 121

• Message text: Source system not available; user &1 confirmed they want to proceed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION121 - Source system not available; user &1 confirmed they want to proceed ?

  The SAP error message CNV_IUUC_REPLICATION121 indicates that the source system is not available for data replication, and it prompts the user to confirm whether they want to proceed despite this issue. This error typically arises in the context of SAP Landscape Transformation (SLT) replication scenarios, where data is being replicated from a source system (like an SAP ERP system) to a target system (like SAP HANA).
  Cause:
  
  Source System Unavailability: The most common cause is that the source system is down or not reachable due to network issues, maintenance, or other operational problems.
  Configuration Issues: There may be misconfigurations in the SLT setup, such as incorrect connection parameters or missing authorizations.
  User Confirmation: The message indicates that the user has confirmed their intention to proceed, which may lead to data inconsistencies if the source system is indeed unavailable.
  
  Solution:
  
  Check Source System Status: Verify that the source system is up and running. Check for any downtime or maintenance activities that might be affecting its availability.
  Network Connectivity: Ensure that there are no network issues preventing the SLT system from connecting to the source system. This can include checking firewalls, VPNs, or other network configurations.
  Review SLT Configuration: Go through the SLT configuration settings to ensure that the connection to the source system is correctly set up. This includes checking the RFC destination and ensuring that the necessary authorizations are in place.
  Restart Replication: If the source system is back online, you may need to restart the replication process in the SLT configuration.
  Logs and Traces: Check the SLT logs and traces for more detailed error messages that can provide insights into what went wrong. This can help in diagnosing the issue more effectively.
  User Confirmation: If the user has confirmed to proceed, ensure that they understand the implications of continuing without a valid source system, as this may lead to data inconsistencies.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  SLT Documentation: Review the official SAP documentation for SLT to understand the configuration and operational requirements better.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and error messages for further analysis.
  
  By following these steps, you should be able to diagnose and resolve the CNV_IUUC_REPLICATION121 error effectively.