Unable to list item. Variations Specifics and Item Specifics entered for a Multi-SKU item should be different.. Variation Specifics provided does not match with the variation specifics of the variations on the item.. Missing name in the variation specifics or variation specifics set..
The eBay variation parent item specific is the same as the variation Option name.
Update the variation Option name to something different.
In the case above, simply update the variation Option name from COLOR to COLORS.