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

DFS_ASSGMT_VAL120 - Overview

• 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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DFS_ASSGMT_VAL120 - Details

• 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