The first purchase order from a retailer feels like a milestone. Then the vendor manual arrives: label formats, pallet rules, delivery appointments, and penalties for every deviation. Wholesale can grow a brand quickly, but only if the warehouse behind it can follow instructions exactly. This guide explains what retail compliance involves and what to confirm before you say yes to the first PO.
Retail compliance means following each retailer's rules for order intake, packing, labeling, shipment notices and delivery timing. Breaking them costs you chargebacks. Before accepting a purchase order, read the vendor manual, confirm your warehouse can meet every requirement in writing, and decide how wholesale and DTC will share inventory.
Why Wholesale Is a Different Job From DTC
A DTC order is one customer, one package, and a carrier label. A wholesale order is a purchase order from a buyer who has a written rulebook, a receiving dock with a schedule, and a system that scans everything you send. The product is the same. The work around it is not, and the cost of getting it wrong is paid in deductions instead of refunds.
If you are still deciding who should run this, start with how to vet a 3PL and add wholesale capability to your checklist. Many providers are built for parcel shipping only, and finding out after the first PO arrives is the expensive way to learn it.
The Five Things Retailers Actually Enforce
Order intake
POs arrive by EDI, a vendor portal, or email, and must be acknowledged and matched to your system exactly.
Packing and labeling
Case packs, carton sizes, pallet configuration, and scannable shipping labels in the retailer's format.
Shipment notice
An advance ship notice that matches what is physically on the truck, down to the carton.
Routing and timing
Approved carriers, delivery appointments, and ship or arrival windows set by the buyer.
Underneath all four sits accuracy. Retailers typically measure suppliers on whether orders arrive complete and on time, and a short or late shipment can cost more than the profit on the order. Treat the vendor manual as a contract, because in practice it is one.
EDI and ASNs in Plain English
EDI is a standard format for passing business documents between computers. The common ones are the purchase order, the advance ship notice, and the invoice. You receive the first, send the other two, and the retailer's system checks them against each other and against what its dock scans.
The ASN is where most problems begin. It must list what is in each carton or pallet and carry the matching label identifier. If the ASN says 24 units in carton A and the carton holds 20, the mismatch follows the whole shipment. That is why ASN data should come straight from the warehouse system at the moment of packing, not be typed in afterward.
Not every retailer requires EDI. Independent stores, boutiques and many regional chains order by email or a portal. Do not buy an EDI setup until a specific buyer requires it.
Labels, Pallets and the Routing Guide
Retailers specify carton labels, pallet labels, pallet height and weight limits, how cartons are stacked, and sometimes how much overhang is allowed. A carton label that is correct but placed on the wrong face of the box can still be rejected at receiving.
The routing guide sets how freight gets to them: which carriers are approved, whether you ship collect on their account or prepaid, and how to book a delivery appointment. Missing an appointment can mean the truck is turned away and rebooked days later, which is its own cost and a late delivery on paper.
Changes to how you pack also change your shipping math, so it helps to understand how dimensional weight affects shipping bills before you commit to carton sizes for a wholesale program.
Chargebacks: Where the Margin Disappears
A chargeback is a deduction taken from what the retailer owes you for breaking a rule. Common triggers are mislabeled cartons, an ASN that does not match, short or over shipments, late delivery, and shipping outside the routing guide. Each may be modest on its own, but they come out of your payment automatically and disputes have deadlines.
- Track them: someone has to review every remittance and match deductions to a reason.
- Dispute with evidence: proof of delivery, photos and ASN records win disputes. This is easier if your warehouse keeps them.
- Fix the cause: a repeated chargeback is a process failure, so trace it to labeling, packing or data.
Budget for some deductions in the first months, and treat the trend, not any single number, as the measure of whether your fulfillment is ready.
Inventory: Don't Let One PO Starve Your Store
A single wholesale order can be larger than a month of DTC sales. If both draw from the same shelves with no rules, a big PO can quietly push you out of stock online, or an online promotion can leave you short for a buyer. Decide allocation before you accept the order, and keep counts accurate with something like regular cycle counts.
If you sell through several channels, wholesale adds one more place where counts can drift. The sync discipline in keeping inventory in sync across channels applies here too.
What to Ask a 3PL Before Your First PO
Ask for the types of retailers served and how many clients, not a general yes.
Send the retailer's vendor manual and ask them to confirm each requirement in writing.
The answer you want is directly from packing scans, with a check before the truck leaves.
Know whether it is the warehouse, you, or the retailer's freight program.
Pallet building, labeling and case-pack work should be separate lines on the rate card. See what a 3PL quote looks like for how to read them.
Frequently Asked Questions
Retail compliance is the set of rules a retailer requires from its suppliers: how purchase orders are received, how cartons and pallets are labeled and packed, how shipments are announced, which carrier and appointment to use, and when goods must arrive. Missing the rules typically results in fees deducted from your invoice, called chargebacks.
EDI, or electronic data interchange, is a standardized way of exchanging business documents such as purchase orders, advance ship notices and invoices. Many large retailers require it. Smaller retailers and specialty shops often accept email or portal orders, so check each buyer's vendor requirements before you invest.
An advance ship notice tells the retailer exactly what is in a shipment: PO number, items, quantities, and which carton or pallet holds what, tied to a scannable label. Retailers use it to receive freight without opening every box, so an inaccurate ASN is one of the most common sources of chargebacks.
A routing guide is the retailer's instruction sheet for inbound freight. It usually covers approved carriers or whether you must use the retailer's freight program, how to request a delivery appointment, and the ship window. Shipping outside it can trigger fees even when the product itself is perfect.
A chargeback is a penalty or deduction a retailer takes against what it owes you for breaking a vendor rule, such as a wrong label, a late delivery, or a short shipment. They are often small per incident but add up, and disputing them has deadlines, so someone needs to track them.
It is a standardized shipping container label with a unique serial shipping container code, printed as a barcode on cartons and pallets. Retailers scan it at receiving and match it to the ASN. Exact formatting and placement are set by each retailer, so follow their guide, not a generic template.
Some can, and some cannot. Wholesale means case packs, pallet building, labeling, appointments and document exchange, which is a different workflow from parcel e-commerce. Ask for proof they already run it for other clients, not a promise to figure it out.
Usually they should share one pool of inventory with allocation rules, so a large PO does not accidentally drain stock needed for DTC orders. Your system should show wholesale commitments against available stock before you accept a PO.
Expect charges for items such as pallet building, carton or pallet labeling, case-pack work, and EDI document handling, on top of normal storage and handling. Ask for each one on the rate card up front, and compare it to the cost of the chargebacks you would risk without it.
Get the retailer's vendor manual first and read the packing, labeling and shipping sections. Then confirm your 3PL can meet every requirement, run a small test shipment if the retailer allows it, and only then commit to a delivery date on the first PO.
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