Create partially paid COD order using API

[ggaurav]

We have a vendor that sells products on our behalf and then creates a order in our Shopify store using API so that we can dropship the order. Recently this vendor has introduced, advance payment feature wherein he collects 10%. advance from customer and we are expected to collect balance 90% at the time of delivery. For invoicing purpose, we need details of the advance money he has collected so that the invoice created in Shopify is for the full 100% value. 

We know that an order can be marked partially paid in shopify. Is there a way to specify the advance and pending amount when creating the order through API?