Assembled product - quantity reduce for the parts used.

[Husalfen]

I have a tricky question that I searched for hours to find a solution for but without any luck.

We have many products that get assembled. In our case it is trophies. 

A trophy is assembled with many pieces. The metal cup, plastic middle parts and a marble base at the bottom.

Beside that there are more variants of the trophy - aka. Different heights - for the different heights there are used different parts.

what I need is when a costumer buy a trophy in a specific design and height the parts used for that specific variant should be reduced in quantity. (Thinking of making each part a hidden product, where the variants are different sizes)

I’ve searched everything but can’t seem to find a solution for my needs.

looking forward for help and replies

[PaulNewton]

Shopify has no native concept of assembled products, compound products, parts inventory, inventory pooling, etc etc etc.

You generally need a sync app to maintain inventory levels amongt skus

For custom scenarios the automation app mechanic can fit most situations.

There are a few premade tasks, though you may script your own

https://tasks.mechanic.dev/?q=sync

i.e. https://tasks.mechanic.dev/maintain-inventory-for-a-product-bundle 

Though it may be possible to pull this off using product bundling, or adding each part to the customers cart/checkout through theme customizations. Though then parts will show as individual line-items.

If you need either this type of automation, or theme customization or consulting then contact me by mail for services.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.
Contact info in signature.