How To Fix GK028 - Breakdown cat. &1 incompatible with &2 (at dependent item &3)

GK028 - Overview

• Message type: E = Error

• Message class: GK - Messages for SAP Consolidation

• Message number: 028

• Message text: Breakdown cat. &1 incompatible with &2 (at dependent item &3)

What causes this issue?

You are trying to modify the item's breakdown category. However, this
modification is not possible because one of the lower-level items in
the item hierarchy expects a different breakdown.
The following rules apply:
The lower-level items must always include all of the breakdowns of the
current item.
The breakdown type of each subassignment of the current item may not
have more restrictions as those of the lower-level item, in this case
with characteristic <ZH>&V4&</>.

System Response

Error message

How to fix this error?

Check the breakdown category and the valid breakdowns of the
lower-level item in Master Data Maintenance, and select a breakdown
category for the current item that meets the above requirements.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GK028 - Breakdown cat. &1 incompatible with &2 (at dependent item &3) ?

  The SAP error message GK028 indicates that there is an incompatibility between the breakdown category of a certain item and the breakdown category of a dependent item in a cost object, such as a production order or a project. This error typically arises in the context of controlling (CO) and can occur during various processes, such as when trying to post costs or create a settlement.
  
  Cause:
  The error message GK028 is triggered when:
  
  Incompatible Breakdown Categories: The breakdown category assigned to the main item is not compatible with the breakdown category of the dependent item. This can happen if the categories are set up to be mutually exclusive or if they are intended for different types of cost allocations.
  
  Configuration Issues: There may be configuration settings in the controlling area or in the cost object that define which breakdown categories can be used together.
  Data Entry Errors: Incorrect data entry during the creation of