How To Fix DFS_ASSGMT_VAL120 - Leading assignment exists between &1 and &2.Cannot change assignment date

SAP Error Message - Details

• Message type: E = Error

• Message class: DFS_ASSGMT_VAL - Messages used in Assignment Validations

• Message number: 120

• Message text: Leading assignment exists between &1 and &2.Cannot change assignment date

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DFS_ASSGMT_VAL120 - Leading assignment exists between &1 and &2.Cannot change assignment date ?

  The SAP error message "DFS_ASSGMT_VAL120 Leading assignment exists between &1 and &2. Cannot change assignment date" typically occurs in the context of managing assignments in SAP, particularly when dealing with personnel assignments, organizational assignments, or similar data structures.
  Cause:
  This error indicates that there is a leading assignment (or a primary assignment) that exists between two entities (e.g., employees, positions, or organizational units) within a specified date range. The system prevents changes to the assignment date because it would create inconsistencies in the assignment history or violate the integrity of the data.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Review the existing assignments between the two entities (e.g., employee and position) to identify the leading assignment that is causing the conflict.
  Use transaction codes like PA20 (Display HR Master Data) or PA30 (Maintain HR Master Data) to view the assignment details.
  
  
  
  Analyze Date Ranges:
  
  Look at the date ranges of the existing assignments. If the assignment you are trying to change overlaps with an existing leading assignment, you will need to adjust the dates accordingly.
  
  
  
  Change Assignment Dates:
  
  If you need to change the assignment date, consider whether you can adjust the date of the leading assignment instead. Ensure that the new date does not conflict with other assignments.
  
  
  
  Delete or Modify Leading Assignment:
  
  If appropriate, you may need to delete or modify the leading assignment to allow for the change you want to make. Be cautious with this approach, as it may affect historical data.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or your organization's guidelines for managing assignments to ensure compliance with data integrity rules.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as PA20, PA30, PA40 (for personnel actions), and PPOSE (for organizational management).
  Data Integrity: Understand the importance of maintaining data integrity in SAP, especially in HR modules, where historical data is crucial for reporting and compliance.
  SAP Notes: Check SAP Notes for any specific fixes or updates related to this error message, as SAP frequently releases updates that may address known issues.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.