We are using NAV 2016 and our costing method is weighted average cost.
I would like to have a solution for below scenario.
Item-A - Raw material - from Overseas Supplier
Item - B - Finished Product -Local Supplier
Item - C - Finished Product - Local Supplier
Importing raw material ( Item- A ) from an Overseas supplier and we pass that Item to the local supplier to make the final products (Item -B & Item -c).
Item-A received through purchase order and posted with proper actual landed cost.
We are receiving local supplier invoice to produce the item-B & Item-C from Raw material Item-A.
Currently, we are practicing Negative adjust to raw material item code and positive adjustment to finish products code with unit cost ( Raw material cost + Value added cost ).
what is the correct way to post the Finish products & Raw material consumption and update the vendor account for above scenario?
Unless you want to do a costly customization, then you should go with using manufacturing. What you describe more sounds like you system was not setup correctly. Unless weighted average cost is different from NAV's standard average cost.
Assembly and subcontracting is not really an option out of the box.