How To Fix PEP091 - The planned start date for task "&" is in the past

PEP091 - Overview

• Message type: E = Error

• Message class: PEP - Schedule Manager: Messages

• Message number: 091

• Message text: The planned start date for task "&" is in the past

What causes this issue?

For the selected task execution date, scheduling times for the tasks in
your task list are in the past.

System Response

You cannot schedule the tasks in the task list as the data is not
consistent.

How to fix this error?

Check the relative start times that are stored in your task list. Use
the "Scheduling simulation" function to check the relative start times.

Error message extract from SAP system. Copyright SAP SE.

PEP091 - Details

• The SAP error message PEP091 indicates that the planned start date for a task is set in the past, which is not allowed in the system. This error typically occurs in project management or production planning scenarios where tasks or activities are scheduled with specific start and end dates.
  
  Cause:
  
  Incorrect Date Entry: The user may have inadvertently entered a start date that is earlier than the current date.
  Data Migration Issues: If data was migrated from another system, it may have included outdated dates.
  Project Rescheduling: Changes in project timelines that were not updated in the task planning.
  System Configuration: Certain configurations or settings in the project management module may enforce strict date validations.
  
  
  Solution:
  
  
  Update the Planned Start Date:
  
  Navigate to the task in question and update the planned start date to a future date that is valid.
  Ensure that the new date aligns with the overall project schedule.
  
  
  
  Check for Dependencies:
  
  Review any dependencies or constraints that may