There should be the ability to specify a Default Location to be used for Drop Shipments if no Location has been specified on the sales document. This is particularly important if Location Mandatory is turned on in the Inventory Setup.

If there is no Location Code filled in on a Customer card it is possible to create a Sales Order with no Location Code filled on the lines. You don't need to release a Sales Order if you're using Drop Shipments so there is no check carried out at any point. If you use the Requisition Worksheet to create your Drop Shipments it will pull through all of the Sales Order Lines that require Drop Shipment. When you try and carry out action message to create PO's it errors saying that a Location Code is mandatory.

If you fill it in on the Requisition Worksheet Lines then it will error when trying to carry out the action message so you need to delete all the lines, go back and update all of the affected Sales Orders before starting the process again.

I propose adding a Default Drop Shipment Location Code either to the Inventory Setup or the Purchasing Code table (you could then use the same field for Special Orders), when the Purchasing Code is validated on the line if the Location Code is blank and Location Mandatory is turned on then it fills it in with the Default Drop Shipment Location Code.