Creation of an .pdf Invoice with an API

[victor11]

Hello,

I need your help to create an invoice using the KIWIZ API. Here is the documentation. https://api.kiwiz.io/doc#/Factures/invoiceSave

I’ve created a POST request and here are the parameters I’ve put in, but obviously it doesn’t work.
First of all, how do I indicate a child key like billing_address → last_name in the parameters?

Thanks for your help!