How to post assembly orders with item tracking via Odata API in Business Central

Here’s a example of how to post Assembly orders and lines and add item tracking to the lines and header via Odata web services in Business Central. First API page to create/read/update assembly orders: page 50130 AssemblyOrders { PageType = API; APIGroup = 'BCPortal'; APIPublisher = 'BCPortal'; APIVersion = 'v1.0'; EntitySetName = 'assemblyOrders'; EntityName = 'assemblyOrder'; DelayedInsert = true; SourceTable = "Assembly Header"; layout { area(Content) { repeater(AssemblyHeader) { field(SystemId; Rec.