Please download the full report from the Merchant center, review the errors. In the extension you have the ability to test a SKU or by product id, take a look to see if there are missing attributes are incorrect data. The most common errors or warnings are missing: shipping data, tax, color, size, age group, gender, product type and product by category. You can take a look at our user guide for help, this can be found at https://wiki.rocketweb.com/display/RSF/Rocket+Shopping+Feeds.