/CPD/CL_MSG159 - Parent object link is assigned multiple times

SAP Error Message - Details

• Message type: E = Error

• Message class: /CPD/CL_MSG -

• Message number: 159

• Message text: Parent object link is assigned multiple times

Self-Explanatory Message

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AnswerBot

• What is the cause and solution for SAP error message /CPD/CL_MSG159 - Parent object link is assigned multiple times ?

  The SAP error message /CPD/CL_MSG159 Parent object link is assigned multiple times typically occurs in the context of SAP's Project Management or Project System modules, particularly when dealing with object links in a project structure. This error indicates that a parent object (such as a project or a work breakdown structure element) has been assigned multiple times to a child object, which is not allowed.
  Cause:
  
  Duplicate Assignments: The most common cause of this error is that the same parent object has been linked to a child object more than once. This can happen due to manual errors during data entry or through automated processes that incorrectly assign links.
  Data Integrity Issues: There may be inconsistencies in the database or issues with data integrity that lead to multiple assignments.
  Configuration Issues: Incorrect configuration settings in the project management module can also lead to this error.
  
  Solution:
  
  Check Assignments: Review the assignments of the parent object to the child object. Ensure that each parent object is only linked once to any child object. You can do this by navigating to the relevant project or work breakdown structure and checking the relationships.
  Remove Duplicates: If you find that a parent object is assigned multiple times, remove the duplicate assignments. This can usually be done through the project management interface or by using transaction codes like CJ20N (Project Builder) or CJ02 (Change Project).
  Data Consistency Check: Run a data consistency check to identify any other potential issues in the project structure. This can help ensure that there are no other duplicate assignments or integrity issues.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing project structures and object links.
  Contact Support: If the issue persists or if you are unsure about making changes, consider reaching out to your SAP support team or consulting with an SAP expert.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N, CJ02, and CJ03 (Display Project) for managing project structures.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that address the issue.
  User Roles and Permissions: Ensure that users have the appropriate roles and permissions to make changes to project assignments, as restrictions can sometimes lead to confusion or errors.
  
  By following these steps, you should be able to resolve the error and maintain the integrity of your project structures in SAP.