Invoice Discrepancy Resolution Engine
Detect and resolve invoice discrepancies with three-way matching and root cause analysis
What You Can Do
You can upload invoices, purchase orders, and receiving reports to Claude, which analyzes them simultaneously to detect mismatches in quantity, unit price, line items, and payment terms. The skill classifies discrepancies by severity and risk level, recommends resolution pathways, and flags duplicate invoices or patterns of vendor overbilling—all before payment is processed.
Features
automatically compares invoices against POs and receiving reports to identify line-item discrepancies
categorizes findings by type (quantity mismatch, price variance, duplicate invoice, etc.) and severity (critical, high, medium, low)
determines whether discrepancies stem from billing errors, receiving mistakes, PO miscommunication, or intentional fraud
flags repeated invoices and patterns of suspicious billing across vendors and time periods
suggests next steps (reject, hold, contact vendor, approve with adjustment) based on discrepancy type and vendor history
identifies systematic overbilling or compliance issues from repeat vendors to inform future processing decisions
catches international supplier invoices with incorrect exchange rates or unit conversions
generates hold justifications with evidence for invoices requiring investigation before processing
Example Output
Example 1: Quantity Mismatch Detection
- Invoice: 500 units @ $12.50 = $6,250
- PO: 500 units @ $12.50
- Receiving Report: 450 units received
- Finding: Quantity variance of 50 units ($625 overcharge) | Severity: High | Recommended action: Contact vendor for credit memo
Example 2: Duplicate Invoice Alert
- Current Invoice: #INV-2024-5847, $8,932.15, dated March 15
- Previous Match: #INV-2024-5847, $8,932.15, dated March 15 (payment processed March 18)
- Finding: Duplicate invoice detected | Severity: Critical | Recommended action: Reject and document vendor notification
Example 3: Price Variance with Vendor History
- Invoice: Unit price $14.75 vs. PO agreed price $14.00 | 2% variance
- Vendor History: 4 of last 7 invoices from this vendor exceeded PO rates
- Finding: Price variance within tolerance but pattern suggests systemic overbilling | Severity: Medium | Recommended action: Hold and escalate to procurement for vendor review
What's Included
- SKILL.md instruction file: complete methodology for discrepancy detection and resolution workflows
- Three-way matching checklist: step-by-step data points to verify across invoice, PO, and receiving documentation
- Discrepancy classification matrix: severity levels, risk categories, and recommended resolution actions
- Vendor history tracking template: log for monitoring repeat discrepancies and vendor compliance patterns
- Payment hold justification framework: documentation template for escalation and audit trails
Who It's For
- Accounts Payable Specialists — processing and reconciling invoices daily to prevent payment errors
- Invoice Processing Managers — overseeing AP workflows and coaching teams on discrepancy resolution
- Financial Controllers — ensuring payment accuracy, preventing fraud, and maintaining vendor relationships
- Internal Auditors — investigating discrepancies and validating three-way matching controls
- Procurement Specialists — tracking vendor billing patterns to inform contract management and renegotiations
Best For
- High-value invoice processing ($5,000+ thresholds requiring manual review)
- New or infrequent vendor invoices with incomplete vendor history
- Complex line-item reconciliation with quantity, unit price, and term variations
- International supplier invoices requiring currency and unit conversion validation
- Vendor pattern analysis to detect systematic overbilling or compliance issues
- Duplicate invoice detection and prevention across batches
- Escalation and payment hold documentation for audit trails
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