2025-08-27.basilAPI ReferenceDocsSupportSign in →Credit Note Ask about this sectionCopy for LLMView as MarkdownBillingCredit NoteIssue a credit note to adjust an invoice’s amount after the invoice is finalized.Related guide: Credit notesEndpointsPOST/v1/credit_notesPOST/v1/credit_notes/:idGET/v1/credit_notes/:id/linesGET/v1/credit_notes/preview/linesGET/v1/credit_notes/:idGET/v1/credit_notesGET/v1/credit_notes/previewPOST/v1/credit_notes/:id/void