List Invoices

The payment side of one invoice — computed by services.invoice_payments.

Only ever computed on the server, from the ledger: a paid flag on the document would be a second copy of a fact the incassi table already holds, and the two would disagree the first time someone deleted a payment.

• due — the invoice total minus the credit notes issued against it (a draft credit note has told the customer nothing yet, so it owes nothing less).
• credited — that credit-note sum.
• paid — net cash collected against this invoice: its own payments plus the refunds recorded against its credit notes (which are stored negative).
• outstanding — what the customer still owes, never below zero.
• overpaid_by — what arrived beyond due, never below zero.
• last_payment_date — the latest incoming payment (a refund is not a payment).
• days_overdue — whole days past due_date while something is still owed; None when nothing is owed or the invoice has no due date.