The Real Reason Your PO and Invoice Don’t Match (And How to Fix It) (Tough AP Interview Question)

f you work in Accounts Payable, you already know this headache: the invoice doesn’t match the PO — and suddenly everyone is looking at AP to fix it. Whether you’re preparing for an AP interview or dealing with this mess in real life, this video breaks down exactly what strong AP pros do when the PO and invoice don’t align. In today’s episode, I walk you through seven common PO–invoice mismatch problems, what causes them, and how experienced AP professionals resolve them while protecting their organization from overpayments, compliance issues, and audit findings. And trust me — the solution to the last scenario is not what most people expect.

What You’ll Learn

How to handle lower quantities on the invoice

Why a lower price isn’t always a win — and can create audit nightmares What to do when the invoice shows higher quantities than the PO

How to resolve higher prices and avoid short‑payment disputes

The hidden risks of extra charges that slip past AP

How to manage missing early‑payment discounts

The surprising exception when dealing with wrong payment terms

Why the three‑way match is your best protection against fraud and duplicate payments

🧠 Perfect For:

AP professionals

AP managers