How To Fix SI099 - Planned start & is before the higher-level planned start &

SAP Error Message - Details

• Message type: E = Error

• Message class: SI - Implementation Guide - Status control

• Message number: 099

• Message text: Planned start & is before the higher-level planned start &

What causes this issue?

You have specified a plan begin which is before the higher-level plan
begin &V2&. The plan begin must not be before the plan begin &V2&. This
plan begin is specified by the document at the higher level in the
hierarchy.

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?

Enter a plan begin after, or not before, &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SI099 - Planned start & is before the higher-level planned start & ?

  The SAP error message SI099, which states "Planned start & is before the higher-level planned start &," typically occurs in the context of project management or production planning within SAP. This error indicates that there is a scheduling conflict where a lower-level task or activity is planned to start before its higher-level task or project is scheduled to begin. 
  Cause:
  
  Incorrect Task Scheduling: The planned start date of a subordinate task is set earlier than the planned start date of its parent task.
  Dependency Violations: There may be dependencies defined between tasks that are not being respected in the scheduling.
  Data Entry Errors: Manual entry errors during the planning phase can lead to incorrect dates being assigned.
  
  Solution:
  
  Review Task Dependencies: Check the hierarchy of tasks and ensure that all dependencies are correctly defined. The start date of the lower-level task should not precede that of the higher-level task.
  Adjust Planned Dates: Modify the planned start date of the lower-level task to ensure it is on or after the planned start date of the higher-level task.
  Use Scheduling Tools: Utilize SAP's scheduling tools to automatically adjust dates based on dependencies and constraints.
  Consult Project Management Guidelines: Ensure that the scheduling aligns with project management best practices and guidelines within your organization.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to review and adjust project schedules.
  Documentation: Refer to SAP documentation or help files for detailed instructions on managing project schedules and dependencies.
  User Roles: Ensure that users have the appropriate roles and permissions to make changes to project schedules.
  Testing Changes: After making adjustments, test the changes in a development or test environment before applying them to production to avoid further issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in project management within SAP.