This is because you don’t define a style. The style is how you link parent products. So each product should have a unique style. If a product has variations (I.E. Different sizes and colors) they would still have the same style. This is the product identifier. Each variant can and usually should have different SKU’s and/or UPC’s
If you are brave enough and want to see whats going on under the hood you can can turn on debugging in eCommerce Feeder by editing ecommerce-feeder/register.php and setting the following
//Only uncomment if you want to do debugging
define(‘ECOMMFEEDER_DEBUG’, 9);
Assuming that the webserver has the proper write access the next time you run an import you will see a file called ecommerce-feeder.log in your ecommerce-feeder directory.
