---
name: check-invoice
description: Check a publisher invoice against its purchase order.
---
# Check an invoice

1. Run check_invoice with the invoice number.
2. If every line matches, say so in one line.
3. If a line is off, name the title, what was invoiced, what was agreed, and the difference.
4. Add up what the shop was overcharged, if anything.
5. Never repeat purchase prices to anyone who did not ask for this check.