How To Fix DMC_RT_MSG519 - Duplicate field: field &1 already exists in BO &2 and structure &3

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 519

• Message text: Duplicate field: field &1 already exists in BO &2 and structure &3

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG519 - Duplicate field: field &1 already exists in BO &2 and structure &3 ?

  The SAP error message DMC_RT_MSG519 indicates that there is a duplicate field definition in a Business Object (BO) or structure. This typically occurs when you are trying to create or modify a Business Object in SAP Data Management or SAP Data Intelligence, and the system detects that a field with the same name already exists in the specified Business Object or structure.
  Cause:
  
  Duplicate Field Definition: The most common cause is that you are attempting to add a field to a Business Object or structure that already has a field with the same name.
  Incorrect Mapping: If you are importing or mapping data, there may be a conflict in the field names.
  Model Changes: If the Business Object or structure has been modified recently, it may have introduced duplicate fields.
  
  Solution:
  
  Check Existing Fields: Review the existing fields in the Business Object or structure specified in the error message. Ensure that the field you are trying to add does not already exist.
  Rename the Field: If you need to add a new field, consider renaming the field you are trying to add to avoid the duplication.
  Modify the Business Object: If the field is not needed, you can remove or modify the existing field to resolve the conflict.
  Review Data Mapping: If this error occurs during data import or mapping, ensure that the mapping does not create duplicate fields.
  Consult Documentation: Refer to SAP documentation or guidelines for creating or modifying Business Objects to ensure compliance with naming conventions and structure.
  
  Related Information:
  
  SAP Data Management: Understanding how Business Objects and structures are defined and managed in SAP Data Management can help prevent such errors.
  Field Naming Conventions: Familiarize yourself with the naming conventions used in your organization to avoid conflicts.
  SAP Community and Support: If the issue persists, consider reaching out to the SAP Community or SAP Support for further assistance.
  
  By following these steps, you should be able to resolve the DMC_RT_MSG519 error and successfully manage your Business Objects and structures in SAP.