How To Fix BT008 - Latest start time is earlier than start time

SAP Error Message - Details

• Message type: E = Error

• Message class: BT - Background processing messages

• Message number: 008

• Message text: Latest start time is earlier than start time

What causes this issue?

You can define a start window with the fields <LS>Start date</> and
<LS>Latest start date</>. The start date must always be before the
latest date of this window.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BT008 - Latest start time is earlier than start time ?

  The SAP error message BT008, which states "Latest start time is earlier than start time," typically occurs in the context of project management or scheduling within SAP. This error indicates that there is a conflict in the scheduling of tasks or activities, where the latest permissible start time for a task is set earlier than its defined start time.
  Cause:
  
  Incorrect Scheduling: The latest start time (LST) for a task is calculated based on dependencies and constraints. If the LST is set incorrectly or if there are conflicting dependencies, this error can occur.
  Dependency Issues: If a task is dependent on another task that has not been scheduled correctly, it can lead to this error.
  Manual Input Errors: Users may manually input start and end times that conflict with the calculated latest start time.
  Changes in Project Plan: If there are changes in the project plan that affect the scheduling of tasks, it can lead to inconsistencies in the timing.
  
  Solution:
  
  Review Task Scheduling: Check the start and end times of the task in question. Ensure that the latest start time is indeed later than the defined start time.
  Adjust Dependencies: Review the dependencies of the task. Ensure that all predecessor tasks are scheduled correctly and that their completion times allow for the current task to start on time.
  Recalculate Dates: If you have made changes to the project plan, recalculate the dates for all tasks to ensure that the latest start times are updated accordingly.
  Consult Project Management Settings: Check the project management settings in SAP to ensure that the scheduling parameters are set correctly.
  Use SAP Transaction Codes: Utilize transaction codes like CJ20N (Project Builder) or CATS (Cross-Application Time Sheet) to review and adjust the project schedule.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for project management and scheduling for more detailed information on how to manage task timings and dependencies.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to scheduling and error messages.
  Training and Support: If the issue persists, consider reaching out to your SAP support team or consulting with a professional who specializes in SAP project management.
  
  By following these steps, you should be able to resolve the BT008 error and ensure that your project scheduling is accurate and consistent.