How To Fix CJ649 - Top-down planning: The function "project dates" is not possible

CJ649 - Overview

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 649

• Message text: Top-down planning: The function "project dates" is not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CJ649 - Top-down planning: The function "project dates" is not possible ?

  The SAP error message CJ649, which states "Top-down planning: The function 'project dates' is not possible," typically occurs in the context of project management within SAP, particularly when using the Project System (PS) module. This error indicates that there is an issue with the project dates that prevents the system from performing top-down planning.
  Causes:
  
  Project Status: The project may be in a status that does not allow for changes to the project dates. For example, if the project is already completed or locked, you may not be able to adjust the dates.
  Planning Type: The planning type set for the project may not support top-down planning. If the project is set up for bottom-up planning, you will encounter this error when trying to use top-down planning functions.
  Missing Authorizations: The user may not have the necessary authorizations to change project dates or perform top-down planning.
  Inconsistent Data: There may be inconsistencies in the project