A retailer routing guide is the part of a retailer's vendor compliance manual that tells you how your shipment has to arrive: which carrier to use, how to label each carton and pallet, what paperwork goes with the goods, when the electronic shipping notice is due, and how to book a delivery appointment. It also doubles as a price list. The manual's fee schedule says what the retailer charges when a shipment misses one of its rules, and the retailer collects that fee by deducting it from what it owes you.
That second part is what catches founders on a first purchase order. The PO arrives with a link to a 60 to 200 page manual, and it reads like a procedures document. Treat it as a fee schedule with instructions attached and the whole thing gets easier to prioritize.
One thing to clear up first, because search results blur it: a freight "routing guide" is also what a shipper calls its own internal list of preferred carriers and lanes. That is not this document. GS1 US, which published a voluntary standard for routing guides back in 2016, describes the retailer version as "typically imbedded within a retailer's vendor compliance manual" and notes that routing guides "are not standardized." Every retailer writes its own. Target's rules are not Walmart's, and a regional chain's manual may be twelve pages or two hundred.
Read it from the back
The manual is organized for the retailer's convenience, not yours. The rules you most need are usually at the end, in a section called something like "compliance fees," "expense offsets," "vendor chargebacks" or "deductions." SPS Commerce's guide for new suppliers gives the same advice: start at the end, because most manuals put the fee schedules and compliance appendices in the back, and working backward from the chargeback schedule tells you which rules carry real money.
Read that fee table once, slowly, and note two things for each line.
- How the fee is calculated. Some are flat (a fixed charge for a late shipping notice). Some are a percentage of the invoice (a missed delivery window). Percentage fees are the ones that can wipe out the margin on the whole order, so they get your attention first.
- Whether it applies per carton, per shipment or per occurrence. A per-carton fee on a 200-carton order is a different problem from a per-shipment fee.
Then go back to the front and read the sections those fees point to. You will find they cluster into five areas.
The five rules that cost money
SPS Commerce groups the rules that drive chargebacks into five areas, and they make a good map of the manual.
The shipping notice, and when it is due. The advance ship notice (ASN, or EDI transaction 856) is an electronic list of what is on the truck: which cartons, what is in each one, which PO they fill, and which carrier is bringing them. The retailer uses it to plan receiving before the truck arrives. The manual sets a deadline, and it can be tight. SPS notes the window "can be as short as several hours before the physical shipment arrives" at the distribution center. A late or missing ASN is a common chargeback because it fails silently. The goods ship, nobody notices the notice never went, and the deduction shows up weeks later.
Delivery appointments and reschedules. Most distribution centers will not accept a truck that just shows up. Someone has to book an appointment, usually through a portal or with the DC directly, and the manual says how far ahead, who books it (you, your 3PL or the carrier) and what happens if the truck is late or the slot has to move. SPS reports that a missed reschedule window "often results in a no-show or late-appointment fee that can reach hundreds of dollars per occurrence."
Pallet build. The manual specifies pallet type and condition, maximum height and weight, how to wrap, and the "TI/HI" (tie and high: how many cartons per layer and how many layers). These numbers have no flexibility, because the DC's racking and automation were designed around them. A pallet that is two inches too tall can be refused or re-stacked at your expense.
Carton labels and barcodes. Every carton gets a label in a format the retailer specifies, almost always a GS1-128 barcode carrying an SSCC (more on that below). The manual also says exactly where on the carton the label goes. A label that scans perfectly can still be non-compliant if it is over a seam, wrapped around a corner, or covered by tape.
Carrier selection and freight terms. The guide tells you which carrier to use for a given weight, destination and freight term. Under "collect" terms the retailer's chosen carrier picks the freight up and the retailer pays for it; under "prepaid" you arrange and pay for the freight and build it into your price. GS1 US notes that routing guides were originally written to tell shippers which carrier to use for collect freight, and that is still the heart of the document. Using the wrong carrier can mean paying the freight difference plus a penalty. If you are new to pallet shipping, LTL versus full truckload explains how a one-pallet shipment moves.
How the label, the packing slip and the ASN fit together
If you have never worked with EDI, this is the section to read twice. The three documents are one system.
The SSCC (Serial Shipping Container Code) is an 18-digit number that identifies one physical shipping unit, usually a carton, sometimes a pallet. It is built from an extension digit, a GS1 Company Prefix, a serial number, and a check digit. It is printed on the carton as a GS1-128 barcode, with the application identifier "00" in front of it. Each SSCC stays unique for the life of that shipping unit, and GS1 rules bar reusing one for at least a year after it ships. The prefix identifies whoever assigned the SSCC, and GS1 lets the party that physically builds the shipping unit do that, including a logistics provider working under its own prefix. So the setup question is not whether you must buy a prefix; it is agreeing with your warehouse, and confirming with the retailer, whose prefix the carton labels will carry. Many brands already hold one for their UPCs.
The ASN lists every SSCC in the shipment and what is inside it. When the pallet reaches the DC, a receiver scans the carton label, and the retailer's system looks up that SSCC in the ASN you sent. If it finds a match, the carton is received and the PO moves toward payment. If it doesn't, SPS Commerce describes the result bluntly: the shipment "becomes effectively invisible to the retailer's automated systems." Receiving stalls, someone counts by hand, and whatever the fee schedule says about that miss applies.
The packing slip is the paper version of the same information, usually placed in or on the lead carton, listing the PO number, items and quantities. The retailer's manual says whether one is required, what goes on it and where it goes. It is not the same thing as the shipping label; if the two documents are new to you, shipping label versus packing slip covers the basics.
The practical consequence: label errors are rarely one-offs. A wrong company prefix, a serial number that repeats, or a template that puts the PO number in the wrong field is a template error, and it repeats on every carton until someone notices. So does any chargeback tied to it. Scan-testing one carton against the ASN before the first full run is the cheapest insurance you can buy.
What a chargeback looks like
A chargeback is a deduction the retailer takes from your invoice for a compliance miss. It is not a bill you can decline to pay; it comes off the remittance. A few published examples show the shape of it.
- C&S Wholesale Grocers, per SPS Commerce's labeling guide, may charge $50 or more for a missing or illegible carton label, rising to $150 per instance when the label carries the wrong PO number.
- When Walmart rolled out its On Time In Full program in 2017, Supply Chain Dive reported that suppliers who missed the target would be fined 3% of the shipment's value, and that early deliveries were fined too, because stock that arrives before the DC wants it has to be stored somewhere. In 2019 a Walmart spokesperson told the same publication the fine was 3% of cost of goods sold for suppliers missing the OTIF threshold. The targets have moved several times since, so the number in your own vendor portal is the one that counts.
- SPS Commerce gives the general pattern: a flat fee for a late ASN, a percentage of the total invoice for a missed delivery window.
These are the retailers' own numbers at the time they were reported, not averages, and they will differ from whatever is in your manual. The point is the structure. Label and paperwork misses tend to be flat charges; delivery-window and in-full misses tend to be a percentage of the order. Whether a flat charge counts per carton, per shipment or per occurrence is set by each manual, which is why the unit matters when you read the fee table. On a first PO of a few thousand dollars, one missed appointment can cost more than the shipping did.
Who does what: brand side and 3PL side
Which parts of the manual are yours and which are your warehouse's is the question that decides whether a first retail order goes smoothly. Some of the manual is yours to handle no matter who ships for you. Some of it is exactly what a fulfillment warehouse exists to do.
Task | Usually the brand | Usually the 3PL |
|---|---|---|
Accept the PO and confirm quantities, prices and ship window | Yes | |
Vendor portal access and retailer onboarding paperwork | Yes | |
UPCs for every item on the PO (under the brand's GS1 prefix) | Yes | |
EDI connection with the retailer (or an EDI provider) | Yes | |
Decide prepaid or collect freight terms with the buyer | Yes | |
Send the routing guide and PO to the warehouse | Yes | |
Carton labels to the retailer's spec (GS1-128 / SSCC) | Yes | |
Retail packing slips in the required format and position | Yes | |
Pallet build to the TI/HI, height and wrap rules | Yes | |
ASN built from what was actually packed, sent on time | Yes | |
Delivery appointment and carrier handoff | Depends on the manual | Depends on the manual |
The last row is deliberate. Some manuals have the vendor book the appointment, some have the carrier do it, and some route everything through the retailer's transportation portal. Read your manual and then agree, in writing, with whoever ships for you about who owns it. The appointment is the item most likely to fall between two chairs.
The EDI row deserves a word too. A brand with one retail account does not necessarily need a full EDI system on day one. Some retailers take a PO by email and an ASN through a vendor portal; the large national chains generally require EDI from the start. Your manual's "electronic trading" or "EDI requirements" section tells you which, and it is worth reading before you sign the vendor agreement rather than after.
A short checklist before the first PO ships
- Confirm you have the current version of the manual. Retailers revise them, and a shipment built to last year's rules is judged against this year's rules and fee schedule.
- Find the ship window on the PO. It is the "must arrive by" or "do not ship before / do not ship after" dates, and the ASN and appointment deadlines count back from it.
- Confirm which distribution center the PO goes to and that the label and pallet rules for that DC match the general ones (some manuals have DC-specific appendices).
- Check that every item on the PO has a UPC and that the case pack on the PO matches how the product is actually cased.
- Send the manual, the PO and the vendor portal details to your warehouse before the product is picked, not after.
- Build one carton to spec, print its label, and scan it against the ASN before the full run.
- Decide who books the appointment and who confirms it was booked.
Where Simpl fits
Simpl Fulfillment ships wholesale and retail orders from the same Austin inventory as direct-to-consumer orders, and that includes the warehouse-side items in the table above: EDI, retail routing guide compliance, retail packing slips, and ASNs. If you land a first PO, send the routing guide and the PO to your account manager, and the carton labels, packing slips, pallet build and shipping notice get handled to that retailer's spec. The brand-side items stay with you. There is more on how it works on the B2B fulfillment page.