Contacts

Contacts are the people at a customer who deal with its bills, such as its accounts payable team; each belongs to one customer for good and receives that customer's invoice emails. An order's billingContactIds names the contacts who receive its invoices, each a contact of the order's customer or of the customer who pays for it; when an order names none, its invoices go to the customer's contacts with the BILLING role, else to the customer's email. Provisioning a deal creates or updates its contact by your externalId and makes it the order's billing contact. A contact can't be deleted while an order names it.