How To Fix /ISDFPS/OM273 - Cannot shift relationship: start (&1) is after end (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/OM -

• Message number: 273

• Message text: Cannot shift relationship: start (&1) is after end (&2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/OM273 - Cannot shift relationship: start (&1) is after end (&2) ?

  The SAP error message /ISDFPS/OM273 Cannot shift relationship: start (&1) is after end (&2) typically occurs in the context of project management or scheduling within the SAP system, particularly in the SAP Integrated Business Planning (IBP) or SAP Project System (PS) modules. This error indicates that there is an issue with the scheduling of tasks or relationships between activities, where the start date of a task is set to a time that is after its end date.
  Cause:
  
  Incorrect Date Configuration: The start date of a task or relationship is set later than its end date, which is logically incorrect.
  Data Entry Errors: Manual entry errors during the creation or modification of tasks or relationships.
  Dependency Issues: If there are dependencies between tasks, the scheduling of one task may inadvertently affect the dates of another.
  System Configuration: Incorrect settings in the project or planning configuration that do not allow for proper date management.
  
  Solution:
  
  Check Dates: Review the start and end dates of the task or relationship in question. Ensure that the start date is earlier than the end date.
  Adjust Relationships: If there are dependencies or relationships between tasks, adjust them accordingly to ensure that the scheduling logic is maintained.
  Data Validation: Implement validation checks during data entry to prevent incorrect date configurations.
  Recreate Relationships: If the issue persists, consider deleting and recreating the relationship with the correct dates.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing task relationships and scheduling.
  
  Related Information:
  
  Transaction Codes: You may need to use specific transaction codes (like CJ20N for Project Management) to access and modify project tasks.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to this error.
  User Roles: Ensure that the user has the appropriate permissions to modify project schedules and relationships.
  Testing: After making changes, test the scheduling to ensure that the error does not reoccur.
  
  If the problem continues after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide deeper insights into the specific configuration and data setup in your SAP environment.