This function will stop Transactions (Transfers, Purchases, Stocktakes) from occurring at a Location which has a Location other than its own Location set as the Stock Location.
Go to File > Stock Control > Locations > Select: Location > Modify
Update the Stock Location so that it reflects the Location of where the Stock is located.
In the above screenshot example, transactions (Transfers, Purchases, Stocktakes) will be inhibited in the Mini Mart Location because the Stock Location for the Mini Mart has been set to Cafe.
When the location is Inhibited, the Location will be hidden from any Location dropdown box on the Transfer, Purchase and Stocktake screens.