invoice_numberstring nullable
client_idinteger required
project_idinteger nullable
invoice_datestring date nullable
period_startstring date nullable
period_endstring date nullable
due_datestring date nullable
vat_amountnumber nullable
total_amountnumber nullable
total_hoursnumber nullable
reverse_chargeboolean nullable
payment_datestring date nullable
recurringboolean nullable
recurrence_intervalstring nullable
recurrence_anchor_dayinteger nullable
recurrence_project_idinteger nullable
parent_invoice_idinteger nullable
email_sent_atstring date-time nullable
resend_email_idstring nullable
email_delivered_atstring date-time nullable
email_opened_atstring date-time nullable
email_bounced_atstring date-time nullable
email_failed_atstring date-time nullable
payment_referencestring nullable
last_reminder_atstring date-time nullable
scheduled_send_atstring date-time nullable
template_fieldsobject nullable
created_atstring date-time required
updated_atstring date-time required