10 Ways to Prevent Overselling in eCommerce without Manual Hassle [2026 Guide]

Overselling costs ecommerce sellers more than just a single sale—it damages customer trust, triggers platform penalties, and eats into profits through refund fees and negative reviews. In 2026, with sellers operating across Shopee, Lazada, TikTok Shop, and Shopify simultaneously, manual inventory tracking isn’t just difficult—it’s impossible.