Message type: E = Error
Message class:  CNVHCM_PRESEL - TDMS4HCM: Messages for Object Selection 
Message number: 051
Message text: Specified selection ID &1 already exists; specify a different ID
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The SAP error message CNVHCM_PRESEL051 indicates that a specified selection ID already exists in the system, and you need to provide a different ID to proceed. This error typically occurs in the context of data selection or processing in SAP, particularly when working with HCM (Human Capital Management) or related modules.
Cause: Duplicate Selection ID: The primary cause of this error is that the selection ID you are trying to use has already been created and exists in the system. SAP does not allow duplicate IDs for selection criteria to maintain data integrity and avoid confusion.
Solution: Use a Different Selection ID: The simplest solution is to specify a different selection ID that does not already exist in the system. You can do this by: Checking the existing selection IDs in the relevant transaction or report. Choosing a new, unique identifier that follows any naming conventions your organization may have. Delete or Modify Existing Selection ID: If
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