7 Mistakes That Destroy Your Google Shopping Performance (And How to Avoid Them)

If your Google Shopping campaigns are not delivering the results you expect, the problem is usually not your bids or your budget. In most cases, it is your product feed. Feed quality issues account for the majority of underperforming Shopping campaigns yet most merchants never look there first. This guide walks you through the 7 most damaging mistakes, explains exactly why each one hurts you, and shows you how to fix them.

Key Takeaways

• Disapproved products generate zero impressions: fixing them is the fastest win available
• Missing or incorrect GTINs block your products from competitive Shopping auctions
• Vague product titles are the single biggest missed opportunity for free visibility
• Stale feed data causes price mismatches that can suspend your entire Merchant Center account
• You do not need to list every product: feed segmentation consistently improves ROAS

Mistake 1: Why Are Your Products Getting Disapproved on Google Shopping?

Disapproved products do not appear in Google Shopping at all. No impressions, no clicks, no sales regardless of how much budget you allocate to your campaigns.

Google disapproves products when your feed violates its policies or contains data quality issues. The most common disapproval reasons are missing required attributes, policy violations, mismatched prices between your feed and website, and missing or invalid GTINs.

Most common disapproval reasons:

• Missing gtin, mpn, or brand attribute
• Price in feed does not match price on landing page
• Product image URL is broken or returns an error
• Product title or description contains promotional language (“Free shipping!”, “50% off”)
• Availability set to “in stock” but product is actually unavailable on the website

How to check: Log into Google Merchant Center > Products > All Products > filter by “Disapproved.” Google shows you the exact reason for each disapproval.

Why Your Products Keep Going Out of Stock on Marketplaces (And How to Fix It)

TL;DR

• Overselling happens when stock levels aren’t synced fast enough across your sales channels.
• A single out-of-stock incident on bol.com or Amazon can result in account warnings, lost Buy Box position, and cancelled orders.
• Manual stock management breaks down once you sell on 2 or more channels simultaneously.
• Automated inventory sync updating every 5 to 15 minutes is the only reliable way to prevent overselling at scale.
• Tools like Koongo synchronise your stock across 500+ channels automatically, with no manual work required.

Unleash your sales potential with Kaufland Global Marketplace – Your ticket to international markets!

Imagine your products reaching customers across Europe and generating more revenue –with only one registration needed. Kaufland Global Marketplace offers an all-in-one solution to help you rapidly grow your business both domestically and internationally, without significant resource costs. This multi-marketplace technology allows you to centrally manage all offers, orders and product data from a single portal.

Register now and start selling on one of the best marketplaces for international success!

Use Promo code: KOONGO26. It’s valid from January 27, 2026 to March 31, 2026 and activates 3 months without a basic fee when registering.

How to Sell on Spartoo Marketplace

In the highly competitive landscape of fashion eCommerce, Spartoo has carved out a powerful niche as one of Europe’s most prominent and specialized marketplaces. Founded in 2006 as a leading online footwear retailer, Spartoo has evolved into a full-featured marketplace platform, welcoming sellers from across Europe and beyond.

Top Emerging Marketplaces in Germany for 2026: Where to Be Selling

Germany’s online retail market is entering a period of renewed strength and transformation in 2025–2026. After several years of slower growth, recent reports show online sales rose to approximately €88.8 billion in 2024, a 3.8% increase over 2023. Growth is forecasted to continue in 2025, with revenues projected at around €92.4 billion. Much of this momentum is driven by one major force: marketplaces.