# Sample output

Prompt v2 (the one in `README.md`), run 2026-09-27 on `sample-billing-sheet.csv` and `sample-invoice-draft.pdf`. Fictional data. Claude's answer below, unedited.

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I found **6 problems** on invoice INV-2026-0931 for Lumen Dental Group (September 2026).

| Line | Problem | Sheet says | Invoice says |
|---|---|---|---|
| Landing page - new patient offer (LD-03) | On the sheet, missing from the invoice | Delivered. 1 x 1,200.00 = 1,200.00. Extra work approved by the client by email on 2026-09-12 | Not on the invoice |
| Blog articles (LD-02) | Quantity is different | 4 delivered, 1,400.00 to bill. The fifth moved to October at the client's request | 5 x 350.00 = 1,750.00 |
| Search ads spend, pass-through (LD-04) | Amount is different | 4,280.50 | 4,820.50 |
| Video edit - 2 short cuts (LD-06) | Billed, but cancelled | Cancelled by the client on 2026-09-18. "Do not bill." Amount to bill 0.00 | 1 x 900.00 = 900.00 |
| Photography - half day (LD-07) | Rate is different | 750.00. Rate card updated 2026-09-01, was 650.00 | 650.00 |
| Billing note | PO number missing | Every invoice must show PO-44817 or the client's accounts team rejects it | No PO number anywhere on the invoice |

**Lines that match**

- Monthly retainer - social and content (LD-01): 1 x 6,500.00 on both.
- Social ads spend, pass-through (LD-05): 2,115.00 on both.

**Worth a look**

- The search ads amounts use the same digits in a different order (4,280.50 and 4,820.50). That looks like a typing slip, but check the ad platform's billing summary before you change it.
- The invoice total will change once these are fixed. I haven't worked out a new total, as you asked.

**Question for you**

- Should the fifth blog article go on October's invoice? The sheet says it moved to October, so I haven't flagged it as missing.