Assembly order with component that is a production order

sbarrett

I am trying to structure a product design where an item that is sold is first assembled (packed) using customer-specific labels & packing, but prior to that is manufactured from a purchased component item.

The problem I am encountering - in a test where no component items are in stock - is that the order promising is calculating the same day as the order date and is not taking into account the purchased item lead times or the manufacturing safety time, warehouse handling time, etc.

Here is an example of the structure;
ITEM1-S - Assemble-to order

Assembly order components: - essentially I am using the assembly order for the packing instruction
ITEM1-M - Manufacture-to-order
Use customer-specific box
Use customer-specific label
Material safety data sheet (MSDS)
On the assembly order all the consumable packing instructions are entered as text as opposed to having actually items set up.

Production order:
ITEM1-M has a production BOM with one component - ITEM1-P which is a purchased item with a lead time of 2D
ITEM1-P is received and a process is performed to transform it into ITEM1-M
The routing process takes say 1 minute per KG

Before I sink too much more time into this - I am simply taking the wrong approach?
I have since restructured into using a make-to-order item for the "packed item" which has a further make-to-order item for the "processed" item.
This works in terms of the order promising working correctly - but it seems a bit overkill to use a production order for a packing process.

Any feedback or ideas are very much appreciated.