Upload a custom-rendered PDF for an invoice that is currently in the Finalizing state. This endpoint is used by external PDF rendering engines that receive the invoice.pdf.generation_requested webhook.
Enterprise Feature: This endpoint requires the Custom PDF Rendering feature to be enabled.
After upload, Fynn will:
invoice:writeDocumentation Index
Fetch the complete documentation index at: https://docs.fynn.eu/llms.txt
Use this file to discover all available pages before exploring further.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Invoice identifier
The PDF file to upload