How to allocate Procurement Categories to each Business Unit (BU) ?

Summary:

segregate Procurement Categories in such a way that each Business Unit (BU) can have and manage its own dedicated Procurement Categories independently

Content (please ensure you mask any confidential information):

We are currently operating with a single Chart of Accounts (COA) and a single set of Procurement Categories, which are shared and assigned across more than 16 Business units within our Oracle Fusion Cloud environment. Our business requirement is to segregate Procurement Categories in such a way that each Business Unit (BU) can have and manage its own dedicated Procurement Categories independently. We have thoroughly explored system configurations and available documentation but were unable to achieve this separation using standard functionality. Additionally, we have reviewed potential workarounds (such as category set assignments, multiple procurement BUs, and security policies) but none