How To Fix C7083 - WBS element &1: Scheduled start comes before the basic start date

SAP Error Message - Details

• Message type: E = Error

• Message class: C7 - Scheduling

• Message number: 083

• Message text: WBS element &1: Scheduled start comes before the basic start date

Self-Explanatory Message

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• What is the cause and solution for SAP error message C7083 - WBS element &1: Scheduled start comes before the basic start date ?

  The SAP error message C7083 indicates that there is a scheduling issue with a Work Breakdown Structure (WBS) element. Specifically, it means that the scheduled start date for a task or activity is set to a date that is earlier than the basic start date defined for that WBS element. This can occur during project planning or when trying to schedule activities in SAP Project System (PS).
  Cause:
  
  Incorrect Date Settings: The scheduled start date for the task is manually set to a date that is before the basic start date of the WBS element.
  Dependencies and Constraints: There may be dependencies or constraints that have not been properly configured, leading to scheduling conflicts.
  Data Entry Errors: Mistakes during data entry can lead to incorrect date assignments.
  Changes in Project Plan: If the project plan has been modified (e.g., rescheduling), it may result in inconsistencies between the scheduled and basic dates.
  
  Solution:
  
  Check Dates: Review the scheduled start date and the basic start date of the WBS element. Ensure that the scheduled start date is on or after the basic start date.
  Adjust Scheduling: If the scheduled start date is incorrect, adjust it to a valid date that complies with the basic start date.
  Review Dependencies: Check for any dependencies or constraints that may affect the scheduling of the WBS element. Adjust them as necessary.
  Re-evaluate Project Plan: If there have been recent changes to the project plan, ensure that all related dates are consistent and correctly aligned.
  Use Project Planning Tools: Utilize SAP's project planning tools to visualize the project timeline and identify any discrepancies in scheduling.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to view and edit WBS elements and their scheduling details.
  Documentation: Refer to SAP documentation or help files for detailed guidance on project scheduling and WBS management.
  User Exits and BAdIs: If the issue persists, consider checking for any user exits or Business Add-Ins (BAdIs) that may affect scheduling logic in your SAP environment.
  Consult with Project Management: If you are unsure about the correct dates or project dependencies, consult with your project management team for clarification.
  
  By following these steps, you should be able to resolve the C7083 error and ensure that your project scheduling is accurate and compliant with the defined parameters.