Tax Rules to apply for Non PO match invoices

Summary:

We want Tax Rules to apply for Non PO match invoices.

We have written rules for event class "Standard invoices" which is working fine. But the same rule is applied when PO matched invoices

are created and validated.

Can we restrict it.

If yes, can someone please suggest which attribute we can use in Tax rules.

Note : Users don't want manual intervention to add any value in fields in manual invoices. Hence we need to consider in tax rules, so that

the same rule should not be applicable for PO match invoices.

Content (required):

as above

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