VbzCart/ui/terms/restock

A restock is an order we place with a supplier. Restocks are tracked in two different ways:

• A Restock Request^T (rrq) is a list of items ordered from a particular supplier on a particular date
• A Restock Received^T (rrc) is a list of items received in response to the request. A given request may result in more than one received restock.

Line-items in a restock request are referred to as "items" rather than "lines" because each catalog item can only appear once.

Each item in a restock request tracks multiple quantities:

• qty-need: quantity needed – what we should order (from the supplier)
  • qty-cust: ...for open customer orders – quantity spoken for (by customer orders)
• qty-ord: quantity ordered – what we ordered (from the supplier)
• qty-exp: quantity expected – what we expect to actually receive (from the supplier)