How To Fix PSI_LEAN_MSGCL003 - You cannot add a WBS subtree

SAP Error Message - Details

• Message type: E = Error

• Message class: PSI_LEAN_MSGCL -

• Message number: 003

• Message text: You cannot add a WBS subtree

What causes this issue?

You cannot add a WBS subtree because the <LS>SD/PS Assignment</>
checkbox (in the master data of the standard project) is not selected.
For more information about SD/PS assignment, see <DS> <DS:DE.PS_FLGSD>
Indicator: New structure for each sales order item</></>.

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

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PSI_LEAN_MSGCL003 - You cannot add a WBS subtree ?

  The SAP error message PSI_LEAN_MSGCL003, which states "You cannot add a WBS subtree," typically occurs in the context of project management within SAP, particularly when dealing with Work Breakdown Structures (WBS). This error indicates that there is an issue preventing the addition of a WBS subtree to the existing structure.
  Causes:
  
  Incorrect Project Status: The project or WBS element may be in a status that does not allow changes. For example, if the project is closed or locked, you cannot add new elements.
  Hierarchy Restrictions: There may be restrictions on the hierarchy level where you are trying to add the subtree. Certain levels may not allow the addition of new WBS elements.
  Authorization Issues: The user may not have the necessary authorizations to modify the WBS structure.
  System Configuration: There may be specific configuration settings in the project system that prevent the addition of new WBS elements.
  Missing Dependencies: If the WBS element you are trying to add has dependencies that are not met, it may trigger this error.
  
  Solutions:
  
  Check Project Status: Ensure that the project is in a status that allows modifications. If it is closed, you may need to reopen it or create a new project.
  Review Hierarchy Levels: Verify that you are trying to add the WBS subtree at a valid level in the hierarchy. Consult your project structure to ensure compliance with the defined hierarchy.
  Authorization Check: Confirm that you have the necessary permissions to modify the WBS structure. If not, contact your SAP administrator to obtain the required authorizations.
  Consult Configuration Settings: Work with your SAP project system configuration team to review any settings that may restrict the addition of WBS elements.
  Check Dependencies: Ensure that all necessary dependencies for the WBS element you are trying to add are satisfied. This may include checking for linked activities or other project elements.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to project management and WBS structures for best practices and guidelines on managing WBS elements.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.