> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extractoseum.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sell on EUM — seller guide

> Complete seller walkthrough: onboarding, creating a product (simple/variable), Smart COA, compliant labeling, inventory, shipping labels, payments, and commissions.

> The full journey to sell: register, create your products, certify them with **Smart COA**,
> label them in compliance, ship them to the warehouse, and get paid. Each step is gated by the system so that a
> product is not sold until it is complete and verified.
>
> **Type:** How-to. **Audience:** sellers. **Status:** v1 (2026-08-01, verified against the system).

***

## 3.1 Registration and onboarding

Becoming a seller reuses your same verified identity (you don't create another account). Steps:

1. **Verify your identity (KYC)** — required to operate.
2. **Register as a seller** — you are assigned your **SKU prefix**.
3. **Tax details (CSF)** — you upload your Constancia de Situación Fiscal (Tax Status Certificate); from it comes your RFC and tax regime (which defines your withholdings).
4. **CLABE** — an account in the name of the holder of your CSF; that's where you receive your SPEI deposits.
5. **Accept the Terms and Conditions.**

Once you meet the requirements, your account becomes **active** and your `/vender` panel opens. *(Seller
registration includes your tax profile and B2B account in the same flow — no CSF, no registration.)*

## 3.2 Create a product (simple vs variable)

* **Simple product** — a single SKU. The SKU is generated upon approval.
* **Variable product** — several presentations (weight, flavor, volume…). **Each variant has its own
  SKU** (that's how Shopify handles it natively). You define options + values and the combinations are generated.
* **Photos per variant** — you can upload your own image per variant; in the store, choosing the variant
  changes the photo.
* **Raw material vs finished product** — you choose this first; it defines whether "total potency" applies (one COA
  for all variants, typical of raw material) or **COA per variant** (finished product = each
  presentation is a different batch).

## 3.3 Product classes

How your product is classified determines its labeling and paperwork (details in the **Compliance** section):
confectionery · dietary supplement · food/edible fats · cosmetic · cartridge/container ·
raw material (cannabinoid input: isolated/broad/full-spectrum CBD, HHC, HHC-O, CBN, CBG). Choose carefully: this
determines which NOM and which seals/legends apply, and whether it's a consumer label or an input identification label.

## 3.4 Your product's Smart COA

Three ways to give it its [Smart COA](smart-coa.md):

1. **Upload the PDF** of a COA from your laboratory → it enters review; the EUM team extracts and releases it.
2. **Use an existing COA** that you already have in your name (you paste its folio/token).
3. **Send for analysis** — you send a sample to a laboratory; when the COA is released it is attached only to your product.

**Validity (hard rule):** a COA is valid for **1.8 years from the analysis date** (not from when you upload it). A
COA that is expired or has no analysis date cannot be released or published. Without a released and valid COA, your product
stays in draft.

## 3.5 Compliant labeling

Every piece you send to the warehouse must carry its label with a **barcode (SKU) + QR (to the Smart COA) +
CVV (anti-counterfeit)** — they are generated from Label Studio on your product. **Without an approved COA, label
printing is not activated.** The regulatory requirements for the label by product class (NOM fields,
seals, legends) are covered in the **Compliance** section *(under construction, being verified with an official source)*.

## 3.6 Prices

You set the **retail** price, and optionally **wholesale (B2B)** with **minimums** and **volume tiers** per
variant. The breakdown of what you receive (price − commission − withholdings = net) is calculated with the current %.

## 3.7 Inventory and transfers to warehouse

* You see the **live stock** of your products, with a breakdown by warehouse when there is more than one.
* You send inventory by creating a **transfer** to the enabled warehouse. **Only published products**
  (with a released COA + published in the store) can be transferred: a draft or a product without a COA **cannot**
  be sent to the warehouse (its path is to send it for analysis first).
* You only see **your** transfers, never those of others.

## 3.8 Shipping labels (mandatory)

We don't receive packages without a registered shipping label — neither at the warehouse nor at the laboratory. Two options:

1. **Your own label** — you register the carrier + tracking number. We verify it with the carrier and track it.
2. **Buy the label in the system** — you get quotes across carriers, choose, and **pay for it with your credit**
   (you top up by buying a pack; the charge is within the platform). The label is issued and ready.

If you don't register a label, we remind you every 24 h. Once it's on its way, you'll see the **real tracking
status** (in transit → delivered) and we notify you when your stock arrives.

## 3.9 Your product's states (and what to do in each)

| State | Means | Your action |
| - | - | - |
| Draft | Missing content/COA | Complete and attach COA |
| COA in review | You uploaded/sent a COA, the team is processing it | Wait for release |
| COA validated | COA released and valid | Send for review |
| In review | The team reviews your product | Wait for approval |
| Changes requested | There is something to correct | Correct and resubmit |
| Published | Live in the store | Send inventory to warehouse |
| Paused / Rejected | Blocked | Contact the team |

On variable products, **each variant** shows its own state (same vocabulary), so you know which one is missing.

## 3.10 Payments, commissions, withholdings, and certificates

* At the end of the month you receive your **account statement**: gross sales − EUM commission − withholdings (ISR + IVA according to
  your tax regime) = **net**, deposited by SPEI (with its receipt).
* You receive your **withholding certificates** and, when applicable, the commission invoices that EUM issues to you.

## 3.11 Seizure = neutral (you are neither charged nor paid)

If a shipment to the customer is **seized**, that product is lost for the seller and for EUM: **it generates
no commission or payment**. The system automatically deducts those sales from your settlement (we don't pay you for
product that didn't arrive, nor do we charge you commission for it). In the **Zones** section you see the risk by postal
code and the impact on your own products.

***

*The content about the regulatory framework (NOM, seals, SCIAN, amparos) is informational, does not constitute legal
advice, and is published citing its official source.*