Use blanket orders when a customer has committed to buy large quantities that are to be delivered in several smaller shipments over a certain period of time. See About Blanket Sales Orders for more details.
Open the 
Blanket Sales Order window.
Press F3 to insert a new order and then press Enter to assign the default number series.
In the Sell-to Customer No.
field, click the AssistButton 
to select the customer from the
Customer List window.
Leave the Order Date field blank. When the separate sales orders are created from the blanket order, the program will set the order date of the sales order equal to the actual work date.
In the detail lines, create separate lines for each shipment. For instance, if your customer wants 1000 units split out equally between four weeks, you would enter four separate lines of 250 units each.
In the Type field for each line, select
Item and in the No. field, click the AssistButton and select the item from the
Item List window.
In the Quantity field for each line, type the amount to be ordered for this line.
The Qty. to Ship field is automatically filled in by the program to indicate the quantity that the sales orders are to be created for on the respective shipment dates.
In the Shipment Date field for each line, enter the date this item must be shipped.
To create an order for any of the lines, remove the quantity in the Qty. to Ship field on all the lines that you DO NOT wish to ship at this time.
When you are ready to create orders, click Make Order and then click Yes. A message appears informing you that the blanket order has been assigned an order number. Note that the blanket order has not been deleted.
Click OK.
To see the results of the preceding steps, click the Line button and then select Unposted Lines, Orders.
In the Sales Lines window, select the appropriate sales order, click the Line button, and select Show Document.
Once the blanket order is converted into a sales order, the sales order contains all the lines from the blanket order. The lines where the quantity in the Qty. to Ship field was deleted appear, but with blank Quantity fields. You may choose to leave, edit, or delete the lines.
It is important to remember that the sales order line quantity must not exceed the quantity of the associated blanket order line. Otherwise, posting of the sales order will not be possible.
When the sales order is posted as shipped and/or invoiced, the program updates the Quantity Shipped and Quantity Invoiced fields on the related blanket order.
The program records the blanket order number and line number as properties of the sales lines when created from a blanket order.
When sales orders are not created directly from the blanket order but still relate to it, a link between a sales order and a blanket order can be established by entering the associated blanket order number in the Blanket Order No. field on the sales order line. The Blanket Order No. field will most likely need to be displayed using the Show Column function.
Once the sales order(s) has been created for the total quantity of a blanket order line, the program ensures that no other sales order(s) is created for the same line by preventing users from entering a quantity in the Qty. to Ship field. If, however, additional quantities need to be added to a Blanket Order, the value in the Quantity field can be increased and additional orders can then be created.
The invoiced Blanket Sales Order remains in the system until it deleted, either by using the Delete (F4) function on individual Blanket Orders or by running the Delete Invoiced Blanket Sales Orders batch job.
If a customer is also recorded as a contact in the Relationship Management application area, and if you have specified an interaction template code for blanket sales orders in the Relationship Management Setup window, when you click Print to print the blanket sales order, the program automatically records an interaction in the Interaction Log Entry table.
Converting Blanket Sales Orders to Sales Orders
Viewing the Status of Blanket Sales Orders
Viewing Unposted and Posted Blanket Sales Order Lines