patch https://api.revolv3.com/api/Invoices/
Update an invoice that is currently in the 'Pending' or 'Delinquent' state.
Only fields present in the request will be updated.
Upon success the operation will return a status code of 200 (OK).
If an invalid field or value is submitted, a status of 400 (Bad Request) will be returned.
If an attempt to update an invoice that is not currently in the 'Pending' or Delinquent' state is made, a status of 400 (Bad Request) will be returned.
If an invalid Invoice ID is submitted, a status of 404 (Not Found) will be returned.