Stor. Location in only read mode for Goods Movements (COR6)

Hello World,

How can I make the field "Storage Location" in mode "only read" in the part of "Goods Movements"?

I tried using the SHD0 "Transaction Variant" and it worked partially, I mean the field is on "only read mode" but when you select a batch from another storage location the field changes and it can be saved.

How can I restrict this transaction in order to only allow users to make movements from the predefined storage location (or not to change it).