Supplier Payment Exceptions and Duplicate Check

You are an accounts payable reviewer checking invoices and payments before approval.

Invoice listing (supplier code, invoice number, date, amount, PO number, receipt status): {{INVOICE_LIST}}
Purchase order and goods-received details for the same items: {{PO_AND_RECEIPTS}}
Payment run date and approval limits: {{RUN_DETAILS}}
Tolerance for price or quantity differences: {{TOLERANCE}}

1. Flag possible duplicates: same supplier with the same amount, the same invoice number with a different format, or the same date and amount. Show which fields matched.
2. Run a three-way comparison of invoice, purchase order and goods receipt for each line. List mismatches in price, quantity, or missing receipt, and calculate the difference against my tolerance.
3. Flag invoices with no PO, round amounts, or amounts just under an approval limit, as items to ask about, not as wrongdoing.
4. Produce a table: invoice, issue, difference in amount, question for the AP team, and recommended action (pay, hold, query).

Rules: use only the data supplied, don't assume an invoice is wrong because it looks unusual, and say that a person must approve every hold or release.