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

SAP Error Message - Details

• 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 data, such as missing or incorrect entries in the project definition or WBS elements.
  Project Structure: The project structure may not be correctly defined, leading to issues with date calculations.
  
  Solutions:
  
  Check Project Status: Verify the status of the project. If it is completed or locked, you may need to change the status to allow for date adjustments.
  Review Planning Type: Ensure that the planning type for the project is set to allow top-down planning. You may need to adjust the planning settings in the project definition.
  Authorization Check: Confirm that the user has the necessary authorizations to modify project dates. If not, contact your SAP security administrator to obtain the required permissions.
  Data Consistency Check: Review the project data for any inconsistencies. Ensure that all required fields are filled out correctly and that there are no missing entries.
  Project Structure Review: Check the project structure to ensure that it is correctly defined. Make sure that all WBS elements are properly linked and that there are no errors in the hierarchy.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to review and modify project details.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message. SAP Notes can provide patches or additional guidance.
  Documentation: Refer to SAP documentation on project planning and management for more detailed information on top-down planning and project date management.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the Project System module.