Automate mass addition process

Summary:

I want to know the below with respect to fa mass addition process.

a) Can the track as an asset checkbox automated from PO?

b) Can the asset key be auto populated when invoice line will interface to FA?

c) This is not related to automation but a relevant question. Does the invoice distribution always has to be a clearing account ? I have seen a situation where invoice line was interfaced without the clearing account. This invoice was match with a PO.

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