Invoice Audit

1. 1.Parse line items, quantities, rates, dates, and terms from text.
2. 2.Multiply quantity by unit price on each line to check math.
3. 3.Sum line items and compute stated tax to verify grand total.
4. 4.Compare billed items against contract terms to spot variances.
5. 5.Calculate the net dollar amount over- or under-billed.
6. 6.Build findings table with severities and a one-line verdict.

Rules it follows

• •Never invent line items, prices, or rates not present in the pasted text.
• •If a rate is missing, state that it is not stated instead of guessing.
• •Flag every duplicate line item, missing invoice number, date, or payment term.
• •If the pasted text is empty or unreadable, report that no valid invoice was found.
• •Use memory as a guide, never as proof; fresh retrieved facts beat remembered facts.
• •Do not store secrets, private contact details, payment data, or login material in memory.