Tax box allocation for VAT on AR credit memos

Summary:

Hi, we have a customer requirement to configure tax box allocations. However, in certain scenarios the VAT assigned to AR Credit memos should be assigned to the tax boxes assigned to AP invoices.

My first thought was to assign the transaction business category as purchase transaction but that is not available in the LOV.
Is there a standard solution to solve this? Or is there a way to enable the Purchase transactions as a value in the transaction business category in AR transactions.

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