The short answer
Review the invoice against the work-order identity, approved scope, estimate, authorization limit, documented change orders, labor and parts evidence, completion record, and tax or fee treatment. Classify each variance before approval; do not use a matching grand total to conceal different work.
Operational checklist
Mark your progress, then save a working copy. Selections reset when you leave this page. A checked box is not an approval or evidence of completion.
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Key takeaways
Assemble the exact commercial and work packet
Collect the work order, property and asset identity, dispatch, estimate versions, accepted scope, authorization, visit records, parts records, change orders, completion evidence, invoice, credits, and prior payments. Confirm the vendor and remittance identity through the approved vendor process.
An invoice can be mathematically accurate and still relate to the wrong unit, visit, scope, or payee. Resolve identity before reviewing price.
Classify differences before deciding them
Bridge the approved expectation to the invoiced amount line by line.
| Variance class | Evidence needed | Decision path |
|---|---|---|
| Scope added or removed | Diagnosis/change order and authority | Approve, dispute, or return for detail |
| Quantity/hours | Visit and labor record | Confirm actual work and terms |
| Part substitution | Installed item and substitution approval | Check price, fit, warranty, and credit |
| Price/rate | Estimate, rate card, or contract version | Resolve version and allowed change |
| Tax/fee | Invoice basis and approved treatment | Route accounting/vendor review |
| Duplicate/credit | Prior invoice, return, or payment identity | Hold until net obligation is supported |
Issue a bounded payment recommendation
State accepted amount, disputed amount, reason codes, supporting evidence, approver, and required vendor response. If partial payment is allowed by policy, keep it tied to accepted lines without implying the disputed balance is resolved.
After approval, link the payable and payment outcome back to the work order. A completion record does not prove an invoice was paid, and a paid invoice does not prove the repair passed verification.
Edge cases
Sources and references
Follow each source to check the underlying claim. Access checks and professional review are different steps.