Limiting related products from being shipped individually

[Lukas Heidbreder]

Hi, everyone.

I am asking for some advice if and how to configure two related products from being shipped individually. The specific case looks as such:

1. Create a Sales Order with two lines, bottles of water and bottle deposit. We are using the <BX Service Supplementary Products> plugin to relate these two products.
2. The amount of water bottles in the order exceeds the amount of water bottles stored.
3. The amount of bottle deposits stored exceeds the amount of water bottles stored, or is not checked (marked Service or not marked IsStocked).

If I now create a shipment from the order, an excess of bottle deposits will appear on said shipments.

So my question is: Is there some way to limit the amount of product B to the amount of product A during processing?

Thank you kindly in advance