Creating dynamic storage bins

Question

When you define a movement type, you can set up the system to create dynamic storage bins in the assigned interim storage area. In this case, the system uses the document number which triggered the stock movement as the coordinates for the interim storage bin.
For example, for a goods receipt, you can set up the system to use the purchase order number as the storage bin coordinates in the interim storage area for goods receipts.
These coordinates only exist as long as the quant is in the interim storage bin; afterwards, they are deleted.
Where do I do the config for the above scenario..
I tried creating bins for interim storage typees in LX20....after creating an interim storage area through referencing standard ones in IMG... I cant understand how the system creates dynamic bins for the movement type. Please help

Answer 1

LX20 is for static bins.
The dynamic ones are created automatically by the system when the stock is moved to the area. 
In the movement type configuration in the WM:
(LE -> WM -> Activities -> Define movement types)
Select your movement type and warehouse and make sure the SCR box is checked
Also check that the field is mapped correctly for the dynamic bin in
LE-> WM -> Activities -> Define Requirements
Field Name is what is grabbed