How To Fix DMC_GENERAL485 - Field position &1 not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 485

• Message text: Field position &1 not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_GENERAL485 - Field position &1 not unique ?

  The SAP error message DMC_GENERAL485, which states "Field position &1 not unique," typically occurs in the context of data management and data migration processes, particularly when working with the Data Migration Cockpit (DMC) or similar tools. This error indicates that there is a conflict with the field position specified in your data mapping or transformation logic.
  Cause:
  
  Duplicate Field Positions: The error usually arises when there are multiple fields in your data mapping that are assigned the same position. This can happen if you have defined the same field multiple times or if there is a misconfiguration in your mapping setup.
  Incorrect Mapping Configuration: If the mapping configuration does not correctly reflect the structure of the source or target data, it can lead to ambiguity in field positions.
  Data Model Changes: Changes in the underlying data model (e.g., changes in the source or target structure) that are not reflected in the mapping can also cause this error.
  
  Solution:
  
  Check Field Mappings: Review your data mapping configuration to ensure that each field has a unique position. Look for any duplicate entries and correct them.
  Update Mapping Configuration: If there have been changes in the data model, update your mapping configuration to reflect these changes accurately.
  Validate Data Structure: Ensure that the source and target data structures are correctly defined and that the mapping aligns with these structures.
  Use Unique Identifiers: If applicable, use unique identifiers for fields to avoid conflicts in field positions.
  Test the Mapping: After making changes, test the mapping to ensure that the error is resolved and that data can be migrated successfully.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the Data Migration Cockpit or the specific tool you are using for detailed guidance on mapping configurations and error handling.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and to find additional solutions or workarounds.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about your mapping configuration and the context in which the error occurs.
  
  By following these steps, you should be able to resolve the DMC_GENERAL485 error and successfully complete your data migration or management tasks.