How To Fix CNV_IUUC_REPL_UI018 - Source system used by another configuration

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPL_UI - IUUC replication messages related to UI

• Message number: 018

• Message text: Source system used by another configuration

What causes this issue?

The source system is used by another configuration.
If multiple configurations use the same source system, this can
negatively impact performance. Note that if a configuration is using a
source system that runs on Sybase ASE or SAP MaxDB, then the source
system cannot be used by another configuration.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPL_UI018 - Source system used by another configuration ?

  The SAP error message CNV_IUUC_REPL_UI018 typically indicates that the source system you are trying to use for a specific configuration is already being utilized by another configuration. This error is often encountered in the context of data replication or migration scenarios, particularly when using SAP Landscape Transformation (SLT) or similar tools.
  Cause:
  
  Multiple Configurations: The source system is already configured for another data replication or migration task, which prevents it from being used for a new configuration.
  Configuration Overlap: There may be overlapping configurations that are trying to access the same source system, leading to conflicts.
  Incorrect Setup: The setup of the source system may not be correctly defined, or there may be a misunderstanding of the configurations in place.
  
  Solution:
  
  Check Existing Configurations: Review the existing configurations in the system to identify which ones are using the source system. You can do this by navigating to the relevant transaction codes or configuration screens in SAP.
  Modify or Delete Conflicting Configurations: If you find that the source system is being used by another configuration that is no longer needed, consider modifying or deleting that configuration to free up the source system.
  Use a Different Source System: If the source system is required for another task, consider using a different source system for your new configuration.
  Consult Documentation: Refer to the SAP documentation or notes related to the specific tool or process you are using (e.g., SLT, SAP Data Services) for additional guidance on handling configurations.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide insights specific to your system setup.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLT configuration transactions (e.g., LTRC, LTRS) to manage and monitor configurations.
  SAP Notes: Check for any SAP Notes related to the error message or the tools you are using, as they may contain specific fixes or workarounds.
  System Logs: Review system logs for additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.