How To Fix CNV_IUUC_REPLICATION020 - Wrong system type, either use S(Sender) or R(Receiver)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 020

• Message text: Wrong system type, either use S(Sender) or R(Receiver)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION020 - Wrong system type, either use S(Sender) or R(Receiver) ?

  The SAP error message CNV_IUUC_REPLICATION020 indicates that there is a mismatch in the system type being used in the context of data replication. This error typically arises in scenarios involving SAP Landscape Transformation (SLT) or data replication processes where the system is expected to either act as a sender (S) or a receiver (R) but is incorrectly configured.
  Cause:
  
  Incorrect System Configuration: The system is not correctly set up as either a sender or a receiver in the replication configuration.
  Replication Setup Issues: The replication setup may have been incorrectly defined, leading to the system being identified as the wrong type.
  Transport Layer Issues: There may be issues with the transport layer or the connection between the sender and receiver systems.
  
  Solution:
  
  
  Check System Configuration:
  
  Verify the configuration of the SLT system. Ensure that the system is correctly defined as either a sender or a receiver in the SLT configuration.
  You can check this in the SLT configuration transaction (usually LTRC for SLT configuration).
  
  
  
  Adjust Replication Settings:
  
  If the system is intended to be a sender, ensure that it is set up as such. Conversely, if it is meant to be a receiver, ensure that it is configured accordingly.
  Review the settings in the Data Replication Configuration (DRC) to ensure that the correct system type is selected.
  
  
  
  Review Connection Settings:
  
  Check the connection settings between the sender and receiver systems. Ensure that the RFC connections are correctly configured and that both systems can communicate without issues.
  
  
  
  Restart Replication:
  
  After making the necessary adjustments, restart the replication process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to SLT and data replication for any specific guidelines or troubleshooting steps that may apply to your version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  LTRC - SLT Configuration
  LTMOM - Data Model Management
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs: Review logs in the SLT system for more detailed error messages that may provide further insight into the issue.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about your configuration and the steps you have already taken.