Google Merchant Center setup service in Japan – from account to approved products

What Google Merchant Center setup gives you – and what your store needs first

Merchant Center is Google's dashboard for your product data. Once products are approved they can appear for free in the Shopping tab and other Google surfaces, and with a linked Google Ads account you can run Shopping campaigns. The account is free, but Google reviews your website as well as your feed. Check that your store already has the following:

• Legal notice: a 特定商取引法に基づく表記 page with business name, address, phone and email
• Shipping and returns: a clear page with shipping fees, delivery times and return conditions
• Tax-inclusive prices: the same tax-inclusive price on the product page and in the cart
• Secure checkout: HTTPS across the site and a checkout that works end to end
• Complete product pages: name, price, stock status and images shown correctly on every page

If any of these is missing, even a perfect feed can fail review. Walk through your own store as a customer, right up to the payment step, and see whether every piece of information is easy to find.

Where Merchant Center setup usually goes wrong

Creating the account is the easy part. Most stores get stuck between submitting products and seeing them live. The usual causes:

• Feed prices do not match site prices, often after a sale, so products are disapproved
• Shipping costs in Merchant Center differ from the fees written on the site
• GTINs (JAN codes in Japan) are missing or belong to a different product
• Product images carry text, borders or logos, or are too small
• Contact details or the return policy are hard to find, and the whole account is suspended for misrepresentation

An account-level suspension means fixing every cause and then requesting a new review, which takes time. Our guide to Merchant Center misrepresentation covers how to deal with suspensions and warnings. Preventing these issues during the first setup is the fastest route to live products.

Step by step: from sign-up to products on Google

If you are setting it up yourself, this order keeps rework to a minimum. Product review typically takes a few days, so start early if a campaign or sale date is already fixed.

• Google account: use an account owned by the business, separate from personal accounts
• Business details: store name, address, contact details, target country (Japan) and currency (JPY)
• Verify and claim your website: with an HTML tag, Google Tag Manager or Google Analytics
• Shipping and returns: enter fees, delivery times and return terms exactly as they appear on your site
• Product data: choose Google Sheets, a file upload or a connection to your e-commerce platform
• Diagnostics: review disapproved products and warnings, fix the cause and resubmit
• Link Google Ads: needed if you plan to run Shopping ads

On Shopify, the Google & YouTube app handles site verification and product sync in one place; on WordPress, WooCommerce stores use the official Google for WooCommerce plugin. For the Shopify details, see Shopify and Google Shopping.

Feed, shipping and tax settings for Japanese stores

The product feed is the list of products you hand to Google. How you fill each field affects both approval and how often your products show up. For stores selling in Japan, pay attention to these points:

• Title: put brand, product type, size or volume and color up front – the words shoppers actually search
• Price: for Japan, submit tax-inclusive prices. The tax settings in Merchant Center apply to the US only
• Identifiers: enter the JAN code as GTIN; for original products without one, use brand and model number
• Availability: mark items out of stock in the feed as soon as they sell out on the site
• Shipping: mirror your real rate table – flat rate, free over a set amount, surcharges for Okinawa and remote islands
• Delivery time: enter handling time and transit time separately

Prices and stock keep changing after launch, so the feed has to follow. An automatic platform sync or a scheduled fetch from a spreadsheet keeps the feed in line with the site and prevents mismatch disapprovals. The more products you carry, the more this decision pays off.

What to keep doing after setup

Once products are approved, free listings start to show. A short monthly routine turns that visibility into sales:

• Check diagnostics for new warnings or disapprovals
• Review titles and images of products with many impressions and few clicks
• Follow Google visitors through to purchase in GA4
• Before seasonal items or sales, confirm prices and stock have reached the feed

To reach more shoppers, you can add paid Shopping campaigns on top. See Google Shopping ads for how they work and how to start.

How UNANOBO handles Merchant Center setup: a free store demo first

UNANOBO takes care of the full setup: account creation, site verification, shipping and return settings, the product feed and the link to Google Ads. The account is created in your name, so you always keep admin control.

Before you commit, we build a free demo based on your current store, with shipping and return information, the legal notice and product pages shaped to pass review. You check it on a computer and a phone, and then receive a proposal for the setup scope and steps. The process is free demo, feedback, launch, growth. The founder handles every project personally, from the first demo to ongoing work after setup, and everything runs by message in Japanese or English.