Check an incoming invoice

Check this invoice. **Do not calculate anything.**

**Absolute rule: do not add, multiply, verify, or restate any number.** Point at which figures to compare and let me do the arithmetic. *Model arithmetic on invoices produces confident wrong totals, and a wrong payment is not recoverable by apologizing.*

Produce a comparison list:
1. **Against the agreement** — rate, quantity, period, currency, scope. For each, say which line on the invoice to compare to which clause. Do not judge whether they match.
2. **Against what was received** — items, quantities, dates.
3. **Internal consistency to check** — line items against the total, tax against the base, discounts applied where stated. *List these as checks for me to perform.*
4. **Details to verify separately, never from the invoice alone** — bank account, business registration number, payee name. Flag these loudly. Account details appearing on an invoice are a known fraud vector and must be confirmed through a channel other than the invoice.
5. **Timing** — invoice date, due date, payment terms against the agreement.

Then:
- Items on the invoice with no basis in the agreement.
- Items in the agreement not invoiced — possibly coming later, possibly missed.
- Anything I gave you that is ambiguous, which I should query before paying.

Rules:
- ⚠️ Tax rates and applicability vary. *Do not state a rate or say whether something is taxable.* Mark for confirmation.
- Say explicitly which checks you did not perform and why.