# Usage Based Invoice Line Recheck

Recheck a usage-based invoice line against the recorded quantity and unit price.

## Scope
Preparation and review only. No account action or professional decision.

## Inputs
Recorded usage quantity, unit price and the invoice line amount.

## Workflow
1. Record the usage quantity for the period.
2. Multiply quantity by the unit price.
3. Compare to the invoice line amount.
4. Return the recheck without billing changes.

## Output contract
invoice_line | quantity | unit_price | expected_amount | invoiced_amount | implied_quantity | difference

## Fictional acceptance test
Fictional usage line records 2,300 units at 0.02 each, which is 46.00: the invoice shows 69.00, implying 3,450 units, a quantity gap of 1,150 to resolve.

## Review gates
Keep original values, source IDs and version dates. Unknown facts stay held. Use qualified review for hiring, legal and accounting conclusions. No send, share, sign-in, scheduling, ledger change or payment. Fictional contract review is not a live account compatibility test.

## Method source
https://docs.stripe.com/billing/subscriptions/usage-based

Checked October 20, 2026. Oct17 live AIS Search Console (sc-domain property, tej@groweasy.ai, Saturday audit): Oct 9-15 complete week 22 clicks, 937 impressions, 2.3% CTR, position 10.6, day-row verified. Top queries: Muse India 125i (3-month), Planable/Claude social agent 45i, marketing Copilot 37i, Planable/ChatGPT 24i, investor agents 19i, Copilot investment-committee 14i, cash flow forecasting 13i, campaign brief 12i. Google Trends verified Oct 17: muse glimmer/spark rising. Site impressions are query leads, not monthly volumes; exact topic volume is unmeasured.