How To Fix /ISDFPS/FDP455 - Start of relationship (&1) must not be before start of object (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/FDP -

• Message number: 455

• Message text: Start of relationship (&1) must not be before start of object (&2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/FDP455 - Start of relationship (&1) must not be before start of object (&2) ?

  The SAP error message /ISDFPS/FDP455 Start of relationship (&1) must not be before start of object (&2) typically occurs in the context of SAP's Flexible Data Model (FDM) or similar modules where relationships between objects (like projects, tasks, or other entities) are defined. This error indicates that there is a conflict in the scheduling of relationships between two objects.
  Cause:
  The error arises when the start date of a relationship (e.g., a dependency or link between two objects) is set to a date that is earlier than the start date of the object it is related to. For example, if you have a task that cannot start until another task is completed, the start date of the relationship must be on or after the start date of the first task.
  Solution:
  To resolve this error, you should:
  
  
  Check Dates: Review the start dates of both the relationship and the objects involved. Ensure that the start date of the relationship is not earlier than the start date of the object it is linked to.
  
  
  Adjust Dates: If you find that the relationship's start date is incorrect, adjust it to be on or after the start date of the related object.
  
  
  Validate Dependencies: Ensure that all dependencies and relationships are logically set up according to the project or process requirements.
  
  
  Re-save Changes: After making the necessary adjustments, save your changes and check if the error persists.
  
  
  Related Information:
  
  
  Transaction Codes: Depending on your SAP version and configuration, you might be using specific transaction codes to manage relationships and objects. Common ones include CJ20N for project management or CATS for time recording.
  
  
  Documentation: Refer to SAP Help documentation for more details on managing relationships and dependencies in your specific module.
  
  
  Support: If the issue persists after checking the dates, consider reaching out to your SAP support team or consulting the SAP community forums for additional insights.
  
  
  By following these steps, you should be able to resolve the error and ensure that your relationships and objects are correctly aligned in terms of their scheduling.