How To Fix UGMD7106 - Assign field &3 in DataSource field/DataSource &1/&2 once only each time

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD7 - Messages for Package UGMD7

• Message number: 106

• Message text: Assign field &3 in DataSource field/DataSource &1/&2 once only each time

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UGMD7106 - Assign field &3 in DataSource field/DataSource &1/&2 once only each time ?

  The SAP error message UGMD7106 typically occurs in the context of data extraction and data modeling, particularly when working with DataSources in SAP BW (Business Warehouse) or SAP HANA. This error indicates that there is an issue with the assignment of fields in a DataSource, specifically that a field is being assigned multiple times, which is not allowed.
  Cause:
  The error message UGMD7106 is triggered when:
  
  A field in a DataSource is assigned more than once. Each field should only be assigned a single time within the DataSource definition.
  There may be a misconfiguration in the DataSource where the same field is inadvertently mapped to multiple target fields or is included multiple times in the extraction logic.
  
  Solution:
  To resolve the UGMD7106 error, you can follow these steps:
  
  
  Check DataSource Definition:
  
  Go to the DataSource in the SAP BW or HANA modeling environment.
  Review the field assignments in the DataSource definition to ensure that each field is only assigned once.
  
  
  
  Remove Duplicate Assignments:
  
  If you find that a field is assigned multiple times, remove the duplicate assignments. Ensure that each field is uniquely assigned to its target.
  
  
  
  Validate DataSource:
  
  After making changes, validate the DataSource to ensure that there are no further issues. This can often be done through the DataSource maintenance transaction (e.g., RSA1 for BW).
  
  
  
  Test Extraction:
  
  Once the DataSource is corrected, perform a test extraction to ensure that the error does not occur again.
  
  
  
  Check for Related Objects:
  
  If the DataSource is part of a larger data flow or is used in transformations, check those related objects to ensure they are not causing conflicts.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) or RSO2 (DataSource Maintenance) to access and modify DataSources.
  Documentation: Refer to SAP Help documentation for detailed guidelines on DataSource configuration and field assignments.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error message.
  
  By following these steps, you should be able to resolve the UGMD7106 error and ensure that your DataSource is correctly configured for data extraction.