Stock Type Determination for Expected Goods Receipt

Hello,

when I create a purchase order I can set a stock type under the delivery tab like so (Freely available/Quality Inspection/Blocked):

When I create the EGR for this purchase order, this stock type is translated into the Stock Type Q4 in the EWM-System:

I would like to change this to Stock Type Q3 but I can't find any way to customize this - please help.

Kind regards,

Tim