How To Fix KP584 - Allocation category for & cannot be changed to "allocatable".

KP584 - Overview

• Message type: E = Error

• Message class: KP - CO-OM Planning

• Message number: 584

• Message text: Allocation category for & cannot be changed to "allocatable".

What causes this issue?

You entered the allocation category or alternative allocation category
for the actual data &V2& for business process &V1& in the interface.
However, the master record for the business process has category '4' (
= non-allocatable activity type ).
Changing between allocatability and non-allocatability, however, is not
allowed.

System Response

The planning record is not accepted.

How to fix this error?

Change the category &V2& in the call correspondingly.

Error message extract from SAP system. Copyright SAP SE.

KP584 - Details

• The SAP error message KP584 indicates that there is an issue with the allocation category of a cost element or cost center in the context of cost allocation. Specifically, it states that the allocation category for a particular object cannot be changed to "allocatable." This typically occurs when you are trying to change the allocation category of a cost element or cost center that is not allowed to be set as allocatable due to certain restrictions or configurations in the system.
  Causes:
  
  Configuration Settings: The cost element or cost center may be configured in a way that does not allow it to be allocatable. This could be due to settings in the controlling area or the specific cost element master data.
  Usage in Transactions: If the cost element or cost center has already been used in transactions that do not support allocation, the system may prevent changes to its allocation category.
  Master Data Restrictions: