If you use Sage 200 Manufacturing, you can generate purchase orders from the Materials Requirements Planning (MRP) module.
Open: Purchase Order Processing > POP Utilities > System Set Up > POP Settings | Order Generation.
Open: Purchase Order Processing > POP Utilities > System Set Up > View POP Settings | Order Generation.
Choose how you want to generate purchase orders in Sage 200 from the POP order generation option drop-down list.
Steps in this task
MRP (Material Requirements Planning)
Document numbering (POP settings)