A Blanket Purchase Order is opened for an amount that is paid off as it goes.
For example: You would open a Blanket Purchase Order for the annual electric bill – they take the total cost they spent last year in electricity and create a Purchase Order for that amount this year. As the bills come in, they tick off the amount leaving the Purchase Order open.
Purchasing -> Vendor Maintenance and Listings -> Open Purchase Order Listing (LG0501)
You print the Purchase Order’s that are flagged as a Blanket Purchase Order by selecting the ‘Print Blanket POs Only’ box