How To Fix CL350 - Class hierarchy "&" is recursive. Inconsistent data

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 350

• Message text: Class hierarchy "&" is recursive. Inconsistent data

What causes this issue?

You exploded a class hierarchy. Class &V1& is subordinate to itself.
This is recursiveness.

System Response

The hierarchy explosion had to be terminated because more than 100
hierarchy levels were found.

How to fix this error?

Inform your system adninistrator or the person responsible for
classification.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL350 - Class hierarchy "&" is recursive. Inconsistent data ?

  The SAP error message CL350 indicates that there is a recursive class hierarchy in the classification system. This means that a class is indirectly or directly referencing itself, which creates an inconsistency in the data structure. This can lead to issues in classification and data integrity within the SAP system.
  Cause:
  
  Circular References: A class may be assigned as a subclass of itself, either directly or through a chain of subclasses. For example, if Class A is a subclass of Class B, and Class B is a subclass of Class A, this creates a circular reference.
  Incorrect Class Assignments: During the creation or modification of class hierarchies, incorrect assignments may have been made, leading to recursive relationships.
  Data Migration Issues: If data has been migrated from another system or if there have been bulk changes made to class hierarchies, this could inadvertently create recursive relationships.
  
  Solution:
  
  Identify the Recursive Class: Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to examine the class hierarchy. Look for any classes that reference themselves or create a loop.
  Correct the Class Hierarchy:
  
  Remove or correct the subclass assignments that are causing the recursion.
  Ensure that no class is assigned as a subclass of itself, either directly or indirectly.
  
  
  Check for Related Classes: Review all classes in the hierarchy to ensure that they are correctly structured and do not create any circular references.
  Use SAP Tools: Utilize SAP tools or reports that can help identify inconsistencies in class hierarchies. This may include custom reports or standard SAP reports that analyze class structures.
  Testing: After making changes, test the classification functionality to ensure that the issue has been resolved and that the class hierarchy is functioning correctly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class) for managing class hierarchies.
  Documentation: Refer to SAP documentation or help files for guidelines on creating and managing class hierarchies to avoid future issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to class hierarchies and classification errors.
  Support: If the issue persists or if you are unable to resolve it, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to identify and resolve the recursive class hierarchy issue indicated by the CL350 error message.