How To Fix COM_CATEGORY018 - Enter a hierarchy to which category &1 belongs

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_CATEGORY - Category

• Message number: 018

• Message text: Enter a hierarchy to which category &1 belongs

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_CATEGORY018 - Enter a hierarchy to which category &1 belongs ?

  The SAP error message COM_CATEGORY018 indicates that a hierarchy must be specified for a category in the context of SAP's classification system, particularly in the area of Product Lifecycle Management (PLM) or similar modules where categories and hierarchies are used to organize data.
  Cause:
  This error typically occurs when:
  
  A category is being created or modified without an associated hierarchy.
  The system requires that every category must belong to a specific hierarchy for proper classification and organization.
  The hierarchy that the category is supposed to belong to has not been defined or is not correctly linked.
  
  Solution:
  To resolve the COM_CATEGORY018 error, you can follow these steps:
  
  
  Check Hierarchy Assignment:
  
  Navigate to the classification system in SAP.
  Verify if the category in question (denoted by &1 in the error message) is assigned to a hierarchy.
  If it is not assigned, you will need to assign it to the appropriate hierarchy.
  
  
  
  Create or Modify Hierarchy:
  
  If the required hierarchy does not exist, you may need to create a new hierarchy.
  Use transaction codes like CT04 (for creating classes) or CT05 (for creating characteristics) to manage hierarchies and categories.
  
  
  
  Assign Category to Hierarchy:
  
  Once you have the correct hierarchy, ensure that the category is linked to it.
  This can typically be done in the classification view where you manage categories and hierarchies.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to make changes to categories and hierarchies.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific instructions on managing categories and hierarchies in your version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CT04, CT05, and CL02 (for class maintenance).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error.
  User Roles: Ensure that the user role has the necessary permissions to create or modify categories and hierarchies.
  Training: If you are new to SAP classification, consider training or resources that cover the classification system in detail.
  
  By following these steps, you should be able to resolve the COM_CATEGORY018 error and ensure that your categories are properly organized within the required hierarchies.