Invoice Accounting Coding Workflow Process

Summary:

I've enabled Invoice Accounting Workflow in the opt-in and also in Manage Invoice Options for my BU.

What's the process that ERP should follow when i have an invoice from IDR?

My understanding was : AP goes in the Payables → Invoices.
In the scanned box open the invoice.
Capture what is not captured / adjust tax codes etc.
Save it
Validate Invoice Job run and validate invoice (Or AP click on validate)
Since my GL account was not entered at the AP side it trigger the WF.

Actually the behavior i have is

AP goes in the Payables → Invoices.

In the scanned box open the invoice.