Hi Christian,
Enable the Only Store same product option in Restrictions tab under the storage area details.
Then in the material flow tab of the site or any location, place the restricted logistics use in the top of the sequence and also the storage area in the top of the line item.
Way to do:
To edit the order of multiple search sequences with the same logistics area use, click Sequence Determination. If a search sequence determination is entered, the system will use the first Search Sequence ID in the table in the order from top to bottom, to check in sequence for a source logistics area.
Pls try this and let me know the status.
Regards,
Samraj