> ## 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.

# How to request your invoice

> Request your invoice (CFDI) for a purchase on EXTRACTOS EUM®: upload your Constancia de Situación Fiscal, invoice per order, enable auto-invoicing, and how orders with multiple sellers work.

> You can invoice your purchases (CFDI). You only need your **Constancia de Situación Fiscal (CSF)** (Tax Status Certificate) from the SAT
> once; afterward you can let your purchases be invoiced **automatically**.

***

## Step by step

1. Go to **My orders** and choose the order you want to invoice.
2. **Upload your CSF** (a PDF you download from the SAT) the first time — we validate your tax details.
3. You receive your **invoice (CFDI)** for the order; it becomes available for download.

## Receipt → invoice

Every purchase generates its proof of purchase. If you didn't invoice at checkout, you can convert that order to an invoice later
(within the allowed period) from My orders.

## Auto-invoicing (once and for all)

When you invoice for the first time with your CSF, you can enable **auto-invoicing**: your subsequent purchases are
invoiced automatically with your details, without you having to request it each time.

## Orders with multiple sellers

EUM is a marketplace: an order may include products from EUM and from other sellers. In that case, **each
party invoices their own line items** — you may receive more than one CFDI for the same order. This is normal and
fiscally correct.

## Your invoice doesn't arrive or a detail is wrong?

Open a [support ticket](soporte.md) with the order number and your RFC.

*Verified against the production system (2026-08-01). Informational; does not constitute tax advice.*