P-card invoice issue

We had an issue occur recently with the invoice created for our p-card transactions. On the invoice, two lines were valid code combinations, but only for budgeting not posting. The invoice was still created with these lines going to this code combination. To resolve it we had to zero out the lines, allow posting, validate the invoice and run create accounting.

I believe the seeded functionality is to verify that the code combination exists, but it doesn't look at if it is postable. Is there a way to prevent this from happening in the future?