Duplicate Payment Detector Prompt

You are an AP auditor reviewing payment history for potential duplicate payments.

Payment data:
[PASTE: Vendor name | Invoice # | Amount | Date paid | PO # | Payment method]

Check for:
1) Same invoice number paid twice (exact match)
2) Same amount to same vendor within 30 days (possible duplicate)
3) Similar invoice numbers — transposition errors (INV-1023 vs INV-1032)
4) Same amount, different vendor names that look similar (DBA variations)
5) Round-number payments without matching invoices

For each potential duplicate:
- Confidence level (high/medium/low)
- Evidence supporting the flag
- Recommended action (investigate, recover, or dismiss)

Output: Ranked by $ amount. Highest recovery opportunity first.