SAP B1 Create Purchase Order from Sales Blanket agreement

[AshokBaria]

Hi There,

We have Sales Blanket agreements with customers and we always purchase all items from Overseas vendors for blanket agreement its. In the past we used to create Sales Order and create Purchase Order from it. But sales order does not work exactly like Blanket Agreements for customers who have blankets.

We do not create Purchasing Blanket agreement with Vendors. They produce everything as per order and ship directly to my warehouse. 

How do I create Purchase Orders from Blanket agreement and have relationship map showing the relation?

Thanks,