Can you generate a pick slip for a finished good item before it is on hand?

Summary:

Our client has the business process where they print their pick slips for their finished good items before the work order is complete. They do this because their finished goods may not be complete until 10 minutes before they ship it out. They use this pick slip to ensure that they save room on the trucks for these finished good items and so that they do not have to quickly print it and then ship it out in a short amount of time.

Is there any way to print a pick slip for items that are not on hand yet?