Open the 
Blanket Sales Order window.
Click the Order button and then select Statistics.
The Sales Order Statistics window for blanket sales orders provides an overview of the contents of the entire blanket order, including the items that haven't been shipped, the items that haven't been invoiced, and basic customer information. The quantities already shipped and invoiced are not reflected here; they are tracked in the Quantity Shipped and Quantity Invoiced fields in the blanket order lines. This window has four tabs: General, Invoicing, Shipping, and Customer. These tabs show information such as quantity, amount, VAT, cost, profit and customer credit limit.
Open the Blanket Sales Order window.
Click the Order button and then select Statistics.
On the General tab, you can see summary information about the entire order based on the total quantity in the Quantity fields on the blanket order lines.
On the Invoicing tab, you can see summary information about the quantities that have not been invoiced, based on the total quantity in the Qty. to Invoice fields on the blanket order lines.
On the Shipping tab, you can see summary information about the quantities that have not been shipped, based on the total quantity in the Qty. to Ship fields on the blanket order lines.
On the Customer tab, you can see balance and credit information about the customer.
Viewing Unposted and Posted Blanket Sales Order Lines