Selling on Amazon, TikTok Shop, and Miravia from Shopify: The Complete Sync Guide

If you run an e-commerce business in Spain in 2025, you know that simply selling on your website isn't enough. Your customers are on Amazon looking for fast shipping, on TikTok watching viral videos, and on Miravia looking for flash deals.

The problem is that with each new channel you open, your logistics operations become exponentially more complex. The nightmare scenario is always the same: You sell your last unit on Amazon at 10:00 AM, and five minutes later, someone buys that same unit on your website. Result: Order cancellation, angry customer, and a marketplace penalty.

In this guide, we explain how to turn your Shopify into the single "Command Center" for managing Amazon, Miravia, TikTok Shop, and more, without going crazy with stock spreadsheets.

Shopify as your "Source of Truth"

The number one mistake is treating each channel as an independent store. The correct strategy is centralization .

Your physical inventory is unique. Therefore, your digital inventory should be too. By properly integrating marketplaces, Shopify becomes the master:

• If an Amazon order comes in, Shopify deducts the website's stock in real time.
• If you change the price in Shopify, it will be updated in TikTok Shop (if you have configured it that way).
• All orders are sent to Shopify so your warehouse can prepare everything from a single dashboard.

1. Shopify + Amazon Spain Integration

Amazon doesn't forgive stock errors. If you cancel orders, they'll close your account. The native integration (Amazon Sales Channel) has improved, but for high volumes, we recommend robust connectors like Codisto or CedCommerce .

Keys to success on Amazon:

• ASIN Mapping: We link your Shopify SKU to the existing ASIN on Amazon. If it doesn't exist, the app can create the product listing from Shopify.
• FBA vs FBM: If you use Fulfillment by Amazon (FBA), Shopify can distinguish which stock is in your warehouses and which is in Amazon's, preventing you from selling what you don't have.

2. Shopify + TikTok Shop Integration

TikTok Shop is revolutionizing social commerce. Purchases are made within the TikTok app, without leaving your website. This boosts conversion rates but complicates management.

How synchronization works:

There is an official TikTok sales channel for Shopify. Once connected:

• Your Shopify products sync with the "Shop" tab of your TikTok profile.
• When a user buys during an influencer's live stream, the order appears in your Shopify admin marked as "Channel: TikTok".
• Pay attention to the Pixel: The integration automatically installs the TikTok Pixel with the Events API, which drastically improves the performance of your TikTok Ads.

3. Shopify + Miravia / El Corte Inglés Integration

Miravia (from the Alibaba group) and local marketplaces like El Corte Inglés or PcComponentes require specific connectors, as they do not usually have a native "Sales Channel" in Shopify.

For these cases, at Migraciones.io we use feed aggregators such as Channable or Lengow :

1. Shopify sends the catalog to Channable.
2. Channable adapts the data (categories, attributes) to Miravia's rules.
3. Channable sends the product to Miravia.
4. When there is a sale, Channable downloads the order to Shopify.

This intermediate architecture is vital for managing complex pricing rules (e.g., "In Miravia I want to be 5% cheaper than on my website").

Channel Integration Summary

Frequently Asked Questions about Multi-Channel

Should I have different prices on each channel?

Technically you can, and strategically you should. Amazon's commissions (15%) typically require different margins. Shopify allows you to manage "Price Lists" or use apps like Channable to automatically apply rules (+15% on Amazon).

What happens if I use an ERP like SAP or Navision?

If you have an ERP system, the architecture changes. Shopify remains the connector to marketplaces, but the ERP system is the inventory master. The flow would be: ERP -> Shopify -> Amazon/TikTok. When a sale occurs: Amazon -> Shopify -> ERP.

How do I manage returns from marketplaces?

Amazon returns are typically handled within Amazon. TikTok or Miravia returns, if properly integrated, can be processed through Shopify so your warehouse is notified that a returned item (RMA) is incoming.