Posting vendor payment in Australia localisation

Hello,

I want to make a vendor payment for AU localisation, and this payment doesn’t apply to any invoice. However, when I try to post this payment, I am getting below error:

“Cannot post the payment journal because one or more journal lines must be applied to an invoice line when the WHT Realized Type Payment”

When I remove the document type from “Payment” to “blank”, then I am able to post this payment.

Can someone please advise on the impact of removing the document type = payment in terms of any reporting or bank reconciliation?