When the location from which you want to pick is setup to require pick processing but not shipment processing, you use the inventory pick documents to record and post picking and shipping information for your source documents.
The source document can be a sales order, a purchase return order, an outbound transfer order, or a production order whose components are ready to be picked.
Open the 
Inventory Pick
window.
To begin working on the pick document, you can either open a pick document that has already been created, or you can create a new document. For more information about creating inventory picks, see Creating Inventory Picks.
To open a previously created pick document, click Pick, List, and select the pick you would like to work with.
In the pick lines, if you are using bins, the program specifies the bin from which the item should be picked by suggesting the item's default bin in the Bin Code field. You can change the bin in this window if necessary.
To create a printed picking list for the lines in the window, click Print.
Perform the pick, and enter the actual quantity picked in the Qty. to Handle.
If it is necessary to take the items for one line from more than one bin, use the Split Line function found in the Functions menu of this window. For more information on splitting lines, see Splitting Lines.
When you have performed the pick, click Posting, Post (or press F11).
The posting process will post the shipment of the source document lines that have been picked, or in the case of production orders, the posting process will post the consumption. If the location uses bins, the posting will also create warehouse entries to post the bin quantity changes.
You can see the posted pick information in the Posted Invt. Picks window on the Inventory menu.