Thanks for your response!. Just one quick question, by localization you are refering to warehouses?

Yes .you need to define locations for each warehouse (location output,location stock and sometimes location input).

Is there also some check within a warehouse on localization? E.g. length of path to root. Or only on name of location. So if I have stock / Z-001 and stock / second floor / A-001 will stock be first taken from Z-001 (shortest route) or A-001 (alphabetical)?

Plz post a new question from this subject.

The products are taken from locations according to the order of the stock.location object. You can define an new order by modifying the _order of this object.