How To Fix CNV_IUUC_REPL_UI014 - Source system used by another configuration in a 1:1 replication scenario

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 014

• Message text: Source system used by another configuration in a 1:1 replication scenario

Diagnosis

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

You want to create a configuration that uses this source system in a
replication scenario. However, this source system is already being used
by a configuration in a 1:1 replication scenario.
Background
A 1:1 replication scenario is a scenario whereby one source system
replicates data to exactly one replication target. In a 1:N replication
scenario, data is replicated from one source system to multiple
replication targets. A replication target usually corresponds to a
database schema. In a 1:N replication scenario, data can be replicated
to multiple schemas in a single system, or to schemas in different
systems.
When you create a configuration, you can decide whether you want a 1:1
replication scenario, or a 1:N replication scenario. The option
<ZK>Allow Multiple Usage</> indicates that the scenario is a 1:N
replication scenario. If you do not choose this option, then the
scenario is a 1:1 replication scenario. That is, only one configuration
can use the source system. Note that for 1:N replication scenarios, a
maximum of &V1& configurations are permitted for a single source system.
Solution
If you want to have a 1:N replication scenario, there are two options:
You can either delete the configuration that uses the source system in a
1:1 replication scenario, and create a new configuration that uses the
option <ZK>Allow Multiple Usage</>.
You can switch from the 1:1 replication scenario to a 1:N replication
scenario. See SAP Note 1898479 for information about how to switch the
replication scenario.

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_UI014 - Source system used by another configuration in a 1:1 replication scenario ?

  The SAP error message CNV_IUUC_REPL_UI014 indicates that the source system you are trying to use for a 1:1 replication scenario is already being utilized by another configuration. This typically occurs in the context of SAP Landscape Transformation (SLT) replication, where multiple configurations may be trying to access the same source system.
  Cause:
  
  Multiple Configurations: The source system is already configured for replication in another SLT configuration. In a 1:1 replication scenario, each source system can only be associated with one target system.
  Incorrect Configuration: There may be an attempt to set up a new replication configuration using a source system that is already in use, leading to conflicts.
  
  Solution:
  
  
  Check Existing Configurations: 
  
  Use transaction code LTRC (SLT Configuration) to check the existing configurations. Identify if the source system is already being used in another configuration.
  
  
  
  Remove or Modify Existing Configuration:
  
  If the existing configuration is no longer needed, you can delete it. Be cautious with this step, as it may affect ongoing data replication.
  If you need to keep the existing configuration, consider using a different source system for your new replication setup.
  
  
  
  Consult Documentation: 
  
  Review the SAP documentation related to SLT and replication scenarios to ensure that you are following the correct procedures for setting up your configurations.
  
  
  
  Contact SAP Support: 
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They can provide guidance based on your specific system setup and requirements.
  
  
  
  Related Information:
  
  SLT Replication: Understand the basics of SAP Landscape Transformation and how it manages data replication between source and target systems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTRC (for configuration overview) and LTMC (for migration cockpit) that may assist in managing your configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the CNV_IUUC_REPL_UI014 error and successfully configure your replication scenario.