I've searched the documentation regarding order creation. Found http://docs.businesscatalyst.com/reference/soap-apis-legacy/crm/order_createupdate.html
The sample shows the structure for the order (SOAP), the restful API to create an order is was found here http://docs.businesscatalyst.com/reference/rest-apis/customers/orders.html#Createaorder
The related elements to create an order, items element was not found in the samples or documenation.
Does this mean that a two step process must be followed i.e.: Create order Header, then another all to add product items to the order?
The goal is to integrate BC with an existing site with this functionality and I am not sure how to proceed.
Any guidance would be appreciated.