How To Fix CNV_MBT_46180 - Selection group: &1 - member: &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 180

• Message text: Selection group: &1 - member: &2 already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_46180 - Selection group: &1 - member: &2 already exists ?

  The SAP error message CNV_MBT_46180 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a duplicate entry in a selection group, meaning that a member with the same identifier already exists in the specified selection group.
  Cause:
  The error is caused by attempting to add a member to a selection group that already contains a member with the same identifier. This can happen due to:
  
  Duplicate data in the source system.
  Incorrect mapping or transformation rules during the migration process.
  Manual errors in defining selection groups.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Check the selection group specified in the error message (indicated by &1) and the member causing the issue (indicated by &2).
  Look for existing entries in the selection group to confirm if the member already exists.
  
  
  
  Remove or Modify Duplicates:
  
  If the duplicate entry is not needed, you can remove it from the selection group.
  If both entries are necessary, consider modifying one of them to ensure they have unique identifiers.
  
  
  
  Review Data Mapping:
  
  Review the data mapping and transformation rules to ensure that they are correctly set up to avoid creating duplicates during the migration process.
  
  
  
  Adjust Migration Settings:
  
  If applicable, adjust the settings in the migration tool to handle duplicates appropriately, such as ignoring them or updating existing entries instead of trying to create new ones.
  
  
  
  Test Migration:
  
  After making the necessary adjustments, run a test migration to ensure that the error does not occur again.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler) to manage your migration objects and selection groups.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates related to this error.
  Documentation: Refer to the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting tips.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.