Your holiday offer may show up in Google's AI Mode. Put it through a cart first.

Why this is worth half an hour now

Two things changed on Google in October, and both point at the same risk.

First, Search Engine Watch reported on October 12 that offers like "Buy 4, get $20 off" had started appearing inside Shopping ads in Google's AI Mode, with a popup showing the details when you tap them. That's how offers already appear in ordinary Shopping results, now carried into the conversational one.

Second, from October 12, Google Ads began automatically pulling deals from some advertisers' websites and attaching them to ads. According to Google's help page, it applies to Search and Performance Max campaigns with location assets that don't already run manual promotions. It's on unless you switch it off.

So a shopper may now see your offer in places you didn't design, and some of those offers may have been read straight off your homepage banner. Every offer Google shows is a promise your checkout has to keep. Black Friday is November 27. Here's a thirty-minute drill to run this week.

Minutes 0 to 10: list every offer that's live or coming

Open three places and write down every offer you find.

Merchant Center promotions. Anything live, scheduled or waiting for approval. Note the products it applies to, the dates and the code.

Your website. Banners, product badges, pop-ups, the line in the header. These are what Google's automated promotions read, so a banner left over from last month is now potentially an ad.

Your discount settings in the store. The codes and automatic discounts your checkout will actually honor, with their start and end times.

Put them side by side. Most stores find at least one offer in one place that doesn't exist in another.

Minutes 10 to 20: put each one through a cart

For every offer that will run on Google, do what the shopper will do. Use a phone, not your admin.

• Add an eligible product. Does the discount apply? If the offer is "Buy 4", does it apply at four and not at three?
• Add an excluded product. Sale items, gift cards and new arrivals are common exclusions. Does the cart treat them the way the offer wording suggests?
• Try the code. If there is one, type it exactly as shown. Lowercase too.
• Check the dates. Merchant Center asks for start and end times with a time zone. If your store ends a sale at midnight Eastern and the promotion says midnight UTC, there's a window where Google shows an offer your checkout refuses.
• Check free shipping. Google's promotions spec says all shipping promotions must include a valid redemption code. Make sure the code exists and works in your cart.

Google's Merchant Center help says promotions have to be redeemable at checkout, and they go through a policy review and a SKU review before showing. That's typically done within 24 hours of the start time but can take up to 72. For a Black Friday offer, that means submitting it well before Thanksgiving week.

Minutes 20 to 30: decide about the automatic one

Now the setting Google switched on for some advertisers. If you run Search or Performance Max campaigns with location assets, Google can lift an offer from your landing pages and show it in your ads. Its help page says each one serves for less than a day at a time and is re-enabled only while it's still visible on your site.

That's reasonable if your website is always accurate. It's risky if banners linger, if an in-store offer appears on a page that online shoppers land on, or if your site's offer wording is looser than your real terms.

You have two sensible choices. Keep it on, and make someone responsible for taking banners down the minute a sale ends. Or switch it off and run your promotions through Merchant Center and promotion assets where you control the wording and dates. Google's opt-out is one account-level switch: in Google Ads, go to Campaigns, then Assets, open the three-dot menu, choose Account level automated assets, then Advanced settings, and set Automated promotions to Off.

What usually breaks

These are illustrative, but they're the patterns we'd look for first.

The midnight mismatch. The promotion ends at a different moment from the store discount. Check the time zone on both.

The bundle exception. The offer says "20% off everything", and the bundles are excluded in the checkout rules. Shoppers notice.

The stale banner. Last week's sale is still in the header. Now it may be in an ad, too.

The threshold that moved. Free shipping over $75 in the promotion, over $100 in the store.

When a customer arrives expecting a price and doesn't get it, the fallout lands on support. Decide now what they'll do, the same way you'd decide what happens when the price dropped after they bought. And check which options your checkout pre-selects while you're there. Our note on checkout defaults has the list.

Run it again on the day

The drill isn't a one-off. Offers change fastest in the week you can least afford a mistake. Many stores run one offer for Black Friday, swap it for Cyber Monday on November 30, then extend something into December. Each swap is a new chance for the website, Merchant Center and the checkout to drift apart.

So repeat the cart test whenever an offer starts or ends, and do it from a phone on mobile data, not the office Wi-Fi with an admin login. Put the times in the shared calendar with a name next to each. The person who launches a sale should also be the one who confirms, an hour later, that the banner, the promotion and the cart all say the same thing.

Start this week. Block thirty minutes this week. List the offers, put each through a cart on a phone, fix the mismatches, submit Black Friday promotions early, and decide whether automated promotions stays on. Write down who owns taking banners down when each sale ends.

If your promotions, catalog and checkout need to tell the same story across Google, your store and your ads, that's the ecommerce work we do. Talk to us.

Related work: Paddle8.