Business Central and Power Apps - Ship Goods from Warehouse

Few weeks ago I experimented with Powerapps and Business Central integration. I liked it and I wanted to do more with it. So here’s another try to push a bit the Powerapps and see how flexible it can be to handle more complicated business requirements. My business requirements are the following: I want to sell products to a Customer via Sales Orders. From Sales Order I will create a Sales Shipment document so the warehouse can ship the goods.