New Navision User

I am a new NAV 5.0 user in the USA. I am currenly in process of going live on the system. I am looking for ideas on best practices for purchasing in a stocking model with no manufacturing. I currently use reorder point based reordering and am trying to duplicate that in NAV,

Most of the company follow the approval process. Incase you are using the reorder policy you need to use the purchase requisition feature of navision and once you create the PO, let it go through the approval process.