How To Fix /PM0/3FB_MESSAGES064 - Multiple parent relationships are not allowed in this node type

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/3FB_MESSAGES -

• Message number: 064

• Message text: Multiple parent relationships are not allowed in this node type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/3FB_MESSAGES064 - Multiple parent relationships are not allowed in this node type ?

  The SAP error message /PM0/3FB_MESSAGES064 indicating "Multiple parent relationships are not allowed in this node type" typically arises in the context of SAP Project Management or similar modules where hierarchical structures (like Work Breakdown Structures or WBS) are used. This error suggests that there is an attempt to create a relationship where a node (like a task or project element) is being assigned to multiple parent nodes, which is not permitted in the system.
  Cause:
  
  Hierarchical Structure Violation: The node you are trying to create or modify is being linked to more than one parent node. In SAP, each node in a hierarchy can only have one direct parent.
  Data Entry Error: There may have been a mistake during data entry, where the same node is inadvertently being assigned to multiple parents.
  System Configuration: The configuration of the project structure may not allow for multiple parent relationships, which is standard in many project management scenarios.
  
  Solution:
  
  Review Relationships: Check the relationships of the node in question. Ensure that it is only linked to one parent. You can do this by navigating to the relevant project structure in SAP and reviewing the hierarchy.
  Modify Parent Assignment: If the node is incorrectly assigned to multiple parents, you will need to remove the additional parent assignments. This can typically be done in the project management transaction (like CJ20N for project structures).
  Data Validation: Ensure that any data imports or uploads are validated to prevent multiple parent assignments from being created in the first place.
  Consult Documentation: Refer to SAP documentation or help resources for specific instructions on managing project structures and relationships.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ02 (Change Project), and CJ03 (Display Project) to manage project structures.
  SAP Notes: Check for any SAP Notes related to this error message for additional context or patches that may address underlying issues.
  User Permissions: Ensure that you have the necessary permissions to make changes to project structures, as restrictions may lead to errors when attempting to modify relationships.
  Training and Support: If you are unsure about how to resolve the issue, consider reaching out to your SAP support team or consulting with a colleague who has experience in project management within SAP.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.