Accounts payable automation.

For PO-based purchases: invoice matched against the original purchase order (what was approved to buy), the goods receipt (what was actually delivered), and the invoice (what's being billed). All three should align on quantity, unit price, total. Tolerance thresholds: $10 or 2% (whichever larger) for line-level differences before flagging. Mismatch routes to exception lane. Non-PO invoices (utilities, subscriptions, professional services) skip the goods-receipt step but still validate against vendor master + active contract.

Recurring invoices from established vendors (utilities, SaaS subscriptions, rent) under a configured threshold ($5K-$25K typical), where the invoice matches expected pattern (amount within tolerance of last 3 invoices), vendor is in good standing, payment terms are standard. Auto-approves with audit trail logging the rule-match rationale. Reduces approver fatigue on routine recurring expenses; lets approver attention focus on actual judgment calls. 40-55% of typical AP volume routes here once auto-pay rules are well-tuned.

Daily 5% random audit sample reviewed by AP team for false-positive 'within rule' approvals. Sample audit is what keeps the auto-pay lane honest — without it, fraud or vendor-creep goes undetected (vendor slowly raises monthly fee 3% per quarter; auto-pay rule never catches it because each individual change is within tolerance). Quarterly review of cumulative auto-pay drift; if a vendor's recurring amount has grown 30%+ over 12 months, auto-pay rule re-tuned.

Invoices above auto-pay threshold or new vendors route to the approval matrix. Routing by amount + department + invoice category — direct manager up to $X, department head up to $Y, CFO above $Z. Approver sees the invoice + AI extraction summary + matching status + vendor history (this is invoice #4 from this vendor in the last 12 months, totaling $X) + budget context (department is at 87% of quarterly budget). Average approval time: 2 minutes vs 8-12 minutes from cold review. Approver's queue contains only items needing actual judgment.

Approvers can approve from mobile (Slack DM, dedicated app, email link). Out-of-office delegation rules pre-configured — approver names a delegate; delegations expire after configured period and require renewal. SLA escalation: approver who hasn't reviewed in 5 business days = nudge; 10 business days = escalate to their manager. Escalation pattern logged; persistent approval bottlenecks surface in quarterly review with concrete data, not anecdote.

3-way match failed, duplicate detected, vendor not in master, payment-terms inconsistency, suspicious patterns. AP team sees the specific exception detail: 'Quantity on invoice (12) exceeds quantity on PO (10)' or 'Same vendor invoice #1234 already paid 3 weeks ago' or 'Vendor is new — not in vendor master, requires onboarding first.' AI fraud detection flags suspicious patterns: rapid invoice-amount changes, invoice payment to a banking detail that doesn't match vendor master record, unusual late-night submission times.

AP team works the resolution. Mismatch → contact vendor for corrected invoice or contact internal requester to verify what was received. Duplicate → confirm with vendor it was issued in error; document for audit trail. New vendor → route to vendor onboarding automation; pause invoice until onboarded. Fraud flag → security/Legal review; never quietly approve. Resolution paths documented per exception type so AP team consistency improves; junior AP staff handle routine exceptions, senior staff handle fraud + complex disputes.

Payment executed. Vendor receives remittance advice automatically — invoice number(s) paid, amount, payment date, payment method. Vendor's AR team can mark invoices as received without back-and-forth. Audit trail captures every step: invoice received timestamp, AI extraction details, 3-way match outcome, approver(s), payment method + date. SOX-grade audit trail; auditors pull receipts without finance scrambling. Vendor satisfaction rises because they get paid on time with clean documentation.

Invoice can't proceed to payment yet. Vendor notified with specific reason — 'Payment held pending corrected invoice (quantity discrepancy)' or 'Held pending vendor onboarding completion' or 'Held pending internal approval (CFO out until Monday).' Vendor knows what's needed; sponsor knows what's needed; AP team has clear queue. Most holds resolve within 5 business days; persistent holds escalate to AP lead for active intervention.

Aged-held queue reviewed weekly. Held >14 days surfaces in AP-lead dashboard for active intervention. Pattern analysis quarterly: which vendors generate most exceptions? (signal that PO process needs tightening or vendor needs replacement). Which approvers are slowest? (signal that approval matrix needs rebalancing). Which invoice categories cause most disputes? (signal that purchasing process needs documentation). The held queue becomes the diagnostic for AP process health.