Marketplace sync apps can fail quietly: an expired connection, a duplicate SKU or untracked inventory, and a listing keeps selling stock you no longer have. The app checks every variant for the settings that typically cause overselling and watches your stock movement, warning you when it goes unusually quiet or many items drop to zero at once. Each issue explains why it matters and how to fix it. Read-only: nothing in your store changes. For stores selling on marketplaces through a sync app.

• Check every variant for oversold stock, duplicate or missing SKUs
• Find untracked items and stock in locations your sync app doesn't read
• Get warned when stock stops moving or many items drop to zero at once
• Get instant alerts by email, Slack or webhook, plus a daily digest
• Fix each issue with a step-by-step guide, while your store stays unchanged