How To Fix STEP659 - Project &1 does not have a tree structure. Some relations ignored

SAP Error Message - Details

• Message type: E = Error

• Message class: STEP - ISO 10303 STEP Mapping Messages

• Message number: 659

• Message text: Project &1 does not have a tree structure. Some relations ignored

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message STEP659 - Project &1 does not have a tree structure. Some relations ignored ?

  The SAP error message "STEP659 Project &1 does not have a tree structure. Some relations ignored" typically occurs in the context of project management within SAP, particularly when dealing with project structures in the Project System (PS) module. This error indicates that the project structure you are trying to work with does not conform to the expected hierarchical (tree) structure, which is necessary for certain operations.
  Cause:
  
  Incorrect Project Structure: The project may have been set up with relationships that do not form a valid tree structure. For example, there may be circular dependencies or multiple parent nodes for a single node.
  Missing Relationships: Some elements of the project may not be properly linked, leading to a fragmented structure.
  Improperly Defined WBS Elements: Work Breakdown Structure (WBS) elements may not be defined correctly, leading to issues in hierarchy.
  
  Solution:
  
  Check Project Structure: Review the project structure in the Project System. Ensure that all WBS elements are correctly defined and that there are no circular references or multiple parents for any WBS element.
  Reorganize WBS Elements: If you find any WBS elements that are incorrectly linked, reorganize them to ensure that they form a valid tree structure. Each WBS element should have only one parent.
  Use Transaction Codes: Utilize transaction codes like CJ20N (Project Builder) to visualize and edit the project structure. This can help you identify and correct any issues.
  Validate Relationships: Ensure that all relationships between WBS elements are valid and that they follow the hierarchical structure required by SAP.
  Consult Documentation: Refer to SAP documentation or help resources for guidelines on setting up project structures correctly.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP may have bugs that are addressed in later updates.
  Training and Documentation: Consider reviewing SAP training materials or documentation related to Project System and WBS structures to better understand how to set up and manage projects effectively.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to resolve the error and ensure that your project structure is valid and functional within SAP.