Create an association between an invoice and a shipment.
Your API key will be used for authentication of the request. Authorization: YOUR_API_KEY
"invoiceId" is required (enter it either in parameters or request body)
"shipmentId" is required (enter it either in parameters or request body)
Query parameters can also be provided in the request body as a JSON object
Responses for POST /api/rest/invoice_shipments
columns and relationships of "invoice_shipments"