Duplicate Bill Payment Detection(Accounts Payable)
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Detects payments recorded more than once across bills, vendor IDs, and reference numbers within the period.
Deterministic Rule Execution Logic
for each bill payment in current period:
match on vendor_id, bill_number, and payment_amount
if duplicate count > 1:
flag EXC-AP-002: duplicate payment detected
calculate variance = duplicate payment amount
all arithmetic in exact decimalsAudit rule logic executes deterministically inside Keel. Monetary numbers are validated to 4 decimal places.