Integration of our App with Retailpro v8 through API

Hi there, We are looking for someone who has got experience working with Retail Pro. Retailpro v 8 is the inventory software running at our partner and we would like to communicate with their system through provided API and be able to bring stock quantity information or location information related to SKU numbers we inquire. And then we be able to feed this inventory information into our own inventory control application running on Linnworks. Linnworks runs on Microsoft enterprise SQL database. But for Retailpro we don't know what database they using but we can find out. So in other words, we already contacted Retail pro and asked them to provide us the API details and they have given us some documentation related to their API which you can study and figure out how to communicate with their system and then bring our required stock details and insert them into our own system. Thanks Sunny