How To Fix HPC045 - Objects assigned to class &1 exist; cannot change hierarchy type &2

SAP Error Message - Details

• Message type: E = Error

• Message class: HPC - Classification-Based Product Hierarchy

• Message number: 045

• Message text: Objects assigned to class &1 exist; cannot change hierarchy type &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HPC045 - Objects assigned to class &1 exist; cannot change hierarchy type &2 ?

  The SAP error message HPC045 indicates that there are objects assigned to a specific class, and as a result, you cannot change the hierarchy type associated with that class. This error typically arises in the context of SAP's Hierarchy Management, particularly when dealing with classifications and object assignments.
  Cause:
  The error occurs when you attempt to change the hierarchy type of a class that already has objects (such as materials, documents, or other entities) assigned to it. The system prevents this change to maintain data integrity, as changing the hierarchy type could affect how those objects are organized and accessed.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Assigned Objects: 
  
  Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check which objects are assigned to the class in question. You can look for the class in the Class Hierarchy or Object Assignment tables.
  
  
  
  Remove Object Assignments:
  
  If you determine that you no longer need the objects assigned to the class, you can remove these assignments. This can typically be done through the relevant transaction (e.g., CL02 for class maintenance) where you can delete or reassign the objects.
  
  
  
  Change Hierarchy Type:
  
  Once all objects have been removed from the class, you should be able to change the hierarchy type without encountering the error.
  
  
  
  Reassign Objects (if necessary):
  
  If you need to keep the objects but change the hierarchy type, consider creating a new class with the desired hierarchy type and reassigning the objects to this new class.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CL01 - Create Class
  CL02 - Change Class
  CL03 - Display Class
  CL24 - Class Hierarchy
  
  
  Documentation: Review SAP documentation on Class Management and Hierarchy Management for more detailed information on how classes and hierarchies work within the SAP system.
  Authorization: Ensure you have the necessary authorizations to make changes to classes and object assignments.
  
  By following these steps, you should be able to resolve the HPC045 error and successfully change the hierarchy type of the class in question.