How To Fix UGMD7104 - Assign function &2 in DataSource field &1 only once each time

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD7 - Messages for Package UGMD7

• Message number: 104

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UGMD7104 - Assign function &2 in DataSource field &1 only once each time ?

  The SAP error message UGMD7104 indicates that there is an issue with the assignment of a function in a DataSource field. Specifically, it states that a function can only be assigned once for each DataSource field. This error typically arises in the context of data modeling or data extraction processes, particularly when working with SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error occurs when:
  
  A function (like a transformation or a routine) is assigned multiple times to the same DataSource field.
  There is a configuration or design flaw in the data model where the same function is inadvertently linked to the same field.
  
  Solution:
  To resolve the UGMD7104 error, you can follow these steps:
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in question and review its configuration.
  Ensure that each function is assigned only once to each field. If you find multiple assignments, remove the duplicates.
  
  
  
  Review Transformations:
  
  If the DataSource is linked to a transformation, check the transformation rules.
  Make sure that the same function is not being applied to the same field in multiple places.
  
  
  
  Adjust Data Model:
  
  If the error is related to a complex data model, consider simplifying it or restructuring the assignments to avoid conflicts.
  
  
  
  Testing:
  
  After making the necessary changes, test the DataSource to ensure that the error no longer occurs.
  
  
  
  Documentation:
  
  Document the changes made for future reference and to help other team members understand the configuration.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. Sometimes, SAP releases notes that provide additional context or solutions for known issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered the same issue and what solutions they have found.
  SAP Help Portal: Refer to the official SAP Help documentation for detailed information on DataSource configuration and best practices.
  
  By following these steps, you should be able to resolve the UGMD7104 error and ensure that your DataSource configuration is correct.