When publishing product groups to eBay from Zentail, occasionally you might run into this error from eBay:
"Variation Specifics provided does not match with the variation specifics of the variations on the item"
When this error happens, what eBay is trying to say is that you need to send a limited number of attributes that are different within the group. For instance, if you're selling shirts that vary by size you may want to send the attributes 'Size' and 'Shirt Size' differently for all products in the group. However, then eBay would see a group that varies by Size, but also has different values for Shirt Size.
To resolve this, simply ask Zentail support to enable 'ebay simple variations' for your account and Zentail will automatically send data such that this error does not occur.