We have suppliers that request a prepayment before the PO is shipped to us. We have been following the process of:

1. raising and posting a supplier payment journal for the prepayment
2. on the PO, settling the payment journal to the PO
3. the goods are received and the purchase invoice is received from the supplier
4. we create a pending invoice journal in D365 and match this up to the PO/GRN
5. when posted, if the pending invoice is manually created, the invoice will settle automatically against the payment journal
6. If the pending invoice is created via standard D365 DMF, using Vendor Invoice Header and Vendor Invoice Line data entities, then the automatic settlement to the payment journal

We have raised this as a bug in the standard D365 software, but have been requested to raise this as an idea. As the majority of our supplier invoices are created in D365 using DMF we would sorely like this fixed as there is a risk of double paying suppliers £10Ks by mistake. Also, I suspect, any supplier invoices created using the new Automation process may suffer the same problem.