Read the attached supplier invoice and prepare a draft for human review. Extract supplier name, document reference, document date, currency, item descriptions, quantities, units, unit prices, line amounts, discounts, additional charges, tax shown and total shown. Preserve the source wording and identify the page or section for each value where possible. Recalculate the line amounts and total separately. Flag discrepancies, unclear text and missing fields; do not guess. List any candidate duplicate only if you have authorized access to our existing bills, and explain the match. Otherwise mark duplicate checking as not performed. Do not approve, post, send or pay anything. Return the draft, checks performed and unresolved questions.