Create invoice
documentedCreate a new invoice (defaults to Draft).
POST /v2/invoicesInvoicesno implementation yet0 runsInput
dated_on*
Invoice dated_on (YYYY-MM-DD)
YYYY-MM-DD
due_on*
Invoice due_on (YYYY-MM-DD)
YYYY-MM-DD
contact_id*
Contact ID
Contact resource ID
Calls FreeAgent as you (your API key is your account); keychains.dev holds the credentials.