Can't import configurable products in magento 2.1 getting validation error like Attribute with this code is not super in row in configurable variation column
Two Points you need to check for this:
Scope of attribute is Global.
It should be assigned to Attribute Set.
Hope this solved the error. (For my case i missed Point 2, Now it is imported successfully !!!)
Check if mispelled attribute name.
In my case, when I copy data from Excel to OpenOffice it cuts off some fields. For instance, I import configurable products and there is
configurable_variations field which has a lot of characters. It is cut when copying therefore error shows up when importing.
This error can also occur if you neglect to set the Apply To option to Simple Product and Configurable Product in the Attribute Properties. Also check the Use To Create Configurable Product property as well.