A blanket purchase order represents a framework for an agreement between you and a vendor. Blanket orders can help you to administer many shipments and to monitor your agreement with a vendor.
Before you can create a blanket purchase order, you must first set up a card for the vendor that you are purchasing the items from and a card for each item that you are purchasing.
Open the 
Blanket Purchase
Order window
Fill in the fields in the blanket order header with information about the vendor. (The program will have already filled in some of the fields.) For Help about a specific field, click the field and press F1.
Fill in the blanket order lines.
If a vendor is also recorded as a contact in the Relationship Management application area, and if you have specified an interaction template code for blanket purchase orders in the Relationship Management Setup window, when you click Print to print the blanket purchase order, the program automatically records an interaction in the Interaction Log Entry table.
Converting Blanket Purchase Orders to Purchase Orders
Viewing the Status of Blanket Purchase Orders