Create AP Invoice approval rule based on PO Line Type value

Summary:

We have a requirement to create some AP Invoice approval rules based on matching PO Line Type. We have some custom PO line types configured in fusion. We need to create rules based on these specific PO line types values.
Currently, we don't find any option available in BPM, to fetch PO Line Type value from FinApInvoiceApproval. Has someone come across this case or has any suggestion on this?

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