How To Fix CNVMBT230 - Subproject &1 is already existing at destination &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 230

• Message text: Subproject &1 is already existing at destination &2

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 CNVMBT230 - Subproject &1 is already existing at destination &2 ?

  The SAP error message CNVMBT230 indicates that there is a conflict during a data migration or transfer process, specifically stating that a subproject already exists at the destination. This error typically arises in the context of using SAP's Migration Cockpit or other data migration tools when trying to import or transfer data that includes subprojects.
  Cause:
  The error occurs when:
  
  You are attempting to create or import a subproject that has the same identifier or name as an existing subproject in the target system.
  There may be a mismatch in the data being transferred, leading to duplication.
  The migration process is not correctly handling existing entries in the destination system.
  
  Solution:
  To resolve the CNVMBT230 error, you can take the following steps:
  
  
  Check Existing Subprojects: 
  
  Verify if the subproject you are trying to import already exists in the destination system. You can do this by navigating to the relevant module in SAP and checking the list of subprojects.
  
  
  
  Rename or Modify the Subproject:
  
  If the subproject already exists and you need to import a new one, consider renaming the new subproject or modifying its identifier to avoid the conflict.
  
  
  
  Delete or Archive Existing Subproject:
  
  If the existing subproject is no longer needed, you may choose to delete or archive it before attempting the import again. Ensure that you have backups and that this action does not affect other processes.
  
  
  
  Adjust Migration Settings:
  
  Review the migration settings or mapping configurations to ensure that they are set up correctly to handle existing data. This may involve adjusting how duplicates are managed during the migration process.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using. There may be specific guidelines or best practices for handling such conflicts.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration or the migration tool in use.
  
  
  
  Related Information:
  
  Migration Cockpit: This is a tool used for data migration in SAP S/4HANA. Understanding how it handles data and conflicts can be crucial.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration, including pre-migration checks, data cleansing, and validation processes.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the CNVMBT230 error and successfully complete your data migration process.