post without location code

Hi Expert,

I have orders with a lot of lines, but usually my customer doesnt take away the all item.
I set the Qty.to Ship field to zero the lines that do not get to transport.
When I want to post I have an error that the I have to fill the location code.
I dont want to change the setup (Warehouse/Setup/Inventory Setup/Location - Location Mandatory).

I know that if I fill the location code in the all lines, I can post the order.
But If I had an order with more than 100 lines, it very uncomfortable if only a few lines to ship.

Are there any solution to make me the posting easier?

thanks for answer