Understanding retailer routing guides
Every major retailer publishes a vendor routing guide, sometimes called a supplier compliance manual. It explains how freight must be packed, labeled, documented, and delivered to its distribution centers and stores. Walmart, Target, Home Depot, Lowe's, Costco, Kroger, Best Buy, Dollar General, and many others each have their own version.
Routing guides typically cover approved carriers or routing requests, appointment scheduling, pallet size and condition, maximum pallet height, GS1-128 carton and pallet labels, advance ship notices (ASN / EDI 856), bill of lading formatting, and delivery windows.