FICTIONAL TRAINING DEMO. Use only the supplied source text below; do not search work files, email, calendars or the web. Produce drafts only.

Using the supplied sample invoice table, treat September 14, 2026 as the review date. List unpaid invoices whose due date is before that date. Calculate outstanding amount as invoice amount minus payments received. Flag repeated supplier/invoice-number combinations for review without deleting them. Return row IDs, due dates, outstanding amounts, totals and the calculation method. Keep duplicates visible and explain whether each total includes them. Do not infer missing payments.


SOURCE TEXT
ACCOUNTING — review date 2026-09-14, USD
row, supplier, invoice, due_date, amount, paid
A1, Paper Birch, PB101, 2026-09-01, 1200, 300
A2, Paper Birch, PB102, 2026-09-20, 800, 0
A3, Cedar Telecom, CT55, 2026-08-31, 450, 450
A4, North Desk, ND88, 2026-09-10, 600, 0
A5, North Desk, ND88, 2026-09-10, 600, 0
A6, Blue Office, BO12, 2026-09-14, 250, 0
A7, Blue Office, BO13, 2026-09-02, 100, 0
Review rule: overdue means due_date strictly before review date AND amount-paid > 0. Duplicates are review flags, not permission to delete records.