There can be errors in the display of product cards, such as empty fields, misleading descriptions and photos, old prices. As long as customers see it, they just leave. They don't want to make extra efforts and google information elsewhere. Why would they buy headphones without any specifications from you if the information on your competitor's website is more detailed whereas the price difference is negligible?
As the customers don't have access to the necessary information, and orders don't match their expectations, the customer satisfaction level decreases.
Remarketing ads show irrelevant or duplicate products. Here is a real case: once a user checked a plaid shirt on a marketplace. After that, a banner with six absolutely identical shirts in different sizes was "chasing" him for almost a week.
Due to the discrepancies in pricing and the actual SKU content, there will be more abandoned Carts and returned orders. Also, the number of repeat orders will decrease. According to researchers from AT Kearney, companies lose up to 3.5% of their revenue
due to poor product information management.
And I suspect it's an underestimation. After all, businesses are not simply losing profit here and now — their overall development is slowing down as well. It complicates the process of entering new markets and discovering new platforms: as the whole process is more resource-consuming than it could be.