How To Fix CNV_IUUC_DB_CONN001 - Not supported system type. Only sender = S and receiver = R are supported

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_DB_CONN - db connection

• Message number: 001

• Message text: Not supported system type. Only sender = S and receiver = R are supported

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_DB_CONN001 - Not supported system type. Only sender = S and receiver = R are supported ?

  The SAP error message CNV_IUUC_DB_CONN001 indicates that there is an issue with the system type configuration in the context of the SAP Landscape Transformation (SLT) replication setup. This error typically arises when the system type is not correctly defined or when the system is not configured to support the required sender and receiver types.
  Cause:
  
  Incorrect System Type Configuration: The error suggests that the system type is not set to the expected values. In SLT, the sender system should be configured as 'S' (Sender) and the receiver system as 'R' (Receiver).
  Unsupported System Type: The system you are trying to connect may not be supported for the operation you are attempting. For example, if you are trying to set up replication between two systems that are not configured correctly, this error can occur.
  Technical Configuration Issues: There may be underlying technical issues with the database connection or the SLT configuration that are causing the system type to be misidentified.
  
  Solution:
  
  
  Check System Type Configuration:
  
  Go to the SLT configuration transaction (usually LTRC).
  Verify the configuration of the source (sender) and target (receiver) systems.
  Ensure that the sender system is marked as 'S' and the receiver system as 'R'.
  
  
  
  Review RFC Connections:
  
  Check the RFC connections between the systems. Ensure that they are correctly set up and that the connection is active.
  Use transaction SM59 to verify the RFC destinations.
  
  
  
  Reconfigure SLT Settings:
  
  If the configuration appears to be incorrect, you may need to reconfigure the SLT settings.
  Delete and recreate the configuration if necessary, ensuring that the correct system types are assigned.
  
  
  
  Check for Notes and Patches:
  
  Look for any SAP Notes or patches that may address this specific error. Sometimes, there are known issues that have been resolved in later versions or patches.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation for SLT to ensure that all prerequisites and configurations are correctly followed.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  SLT (SAP Landscape Transformation): A tool used for real-time data replication from SAP and non-SAP sources to SAP HANA or other target systems.
  System Types: In SLT, the sender and receiver system types are crucial for establishing the correct data flow and replication settings.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTRC (SLT Configuration), SM59 (RFC Destinations), and SLT Monitoring transactions for troubleshooting.
  
  By following these steps, you should be able to resolve the CNV_IUUC_DB_CONN001 error and ensure that your SLT configuration is correctly set up for data replication.