I need to implement my Drop Shipper's Live Inventory API and Order Entry API in my OpenCart based eCommerce website [url removed, login to view] ...
He has SOAP v1 API, which is used for calling his live inventory quantities, and to push your orders to him.
The other information such as price, msrp, weight is available through a feed that is updated daily. He has direct links for these feeds.
In regards to the Create Order module, the data fields coming from your side are listed in the attached email titled “Php API: Create Order” and the conditions that cause an error are attached in “API Error Messages”.