Suggested purchase orders
Requirement by style, colour and size from the forecast over the lead time, less on hand, on order and in the DC.
Two buys, one logic. Central purchasing raises suggested orders from the forecast, the stock position and the cover policy. Direct-to-store purchasing does the same per store for souvenirs and local product that ship straight from the vendor, replacing a fixed quantity per store with each store's own forecast need.

Requirement by style, colour and size from the forecast over the lead time, less on hand, on order and in the DC.
Open orders roll into the merchandise plan by planned receipt month, so commitment is visible against plan before the next buy.
Order sizes derived from the recommended curve, not typed, with the open-order correction listed by size when the curve moves.
For a souvenir class the DC adds cost and time and nothing else. The vendor ships to the store. The question is how much each store needs, and the answer is the store's forecast over the vendor lead time plus safety stock, expressed as weeks of cover.
The chain forecast is spread to the store by the site index, then to size by the size index, both maintained nightly.
Vendor lead time plus safety stock, four to fifty-two weeks depending on the vendor, set per class.
Forecast over the cover, less store stock and store on order; zero when the store is above cover.
One purchase order per vendor with a line per store, released from the list template after review.