"'Auslagerung' actually means 'storage away from base'..."
I'm sorry, David, but absolutely nothing in the German supports your explanation. It's a simple "Entnahme der Ware":
https://wirtschaftslexikon.gabler.de/definition/auslagerung-...https://logistikknowhow.com/logipedia/auslagerung/The opposite is Einlagerung: "Als Einlagerung wird der Vorgang bezeichnet, bei dem die zu lagernde Ware in das Lager verbracht wird."
http://www.lagerwiki.de/index.php/EinlagerungOne of the reasons for Auslagerung can be that you want to store goods somewhere else, yes, but that wasn't asked. Cf
http://www.lagerwiki.de/index.php/AuslagerungAlso @Haigo, do they really request the
return of the goods?
In this context, herausverlangen sounds more like asking for permission to drive onto the premises and remove the items yourself.
Best