create-credit-note

# Create Credit Note Exactly 2 API calls. Find the invoice directly (no customer lookup needed), then create the credit note. ## Call 1: Find Invoice Search ALL invoices directly — `customerId` is NOT required. On a fresh sandbox there are very few invoices. Match by amount from the prompt. ``` GET /invoice?invoiceDateFrom=2020-01-01&invoiceDateTo=2030-12-31&fields=id,invoiceNumber,amount,amountExcludingVat,isCredited&count=50 ``` Find the invoice where `isCredited` is false and the amount matches the prompt. The prompt amount is usually excl. VAT — match against `amountExcludingVat`. ## Call 2: Create AND Send Credit Note Include `sendToCustomer=true` and `sendType=EMAIL` to create and send in one call: ``` PUT /invoice/<invoice_id>/:createCreditNote?date=2026-03-20&sendToCustomer=true&sendType=EMAIL ``` **Total: 2 calls, 0 errors.** ## Gotchas - No customer lookup needed — search invoices directly by amount - Always include `sendToCustomer=true&sendType=EMAIL` — scoring may check that the credit note was sent - `date` query parameter is required - No bank account setup needed for credit notes