Tell me about a time when an unmatched or duplicate invoice is paid. What did you do?

I first confirmed the facts and contained the immediate impact. Next, I reviewed the invoice, PO, receipt, approval, and supplier statement and coordinated the action to verify invoice details, PO, goods receipt, tax, and approval before payment. After verifying the result, I summarized the root cause, preventive control, owner, and follow-up plan so the issue would not recur.