Where does the option “Any” come from?

After syncing product to Zettle the option “Any” have been added to some of my variable products. This article explains why this happened.

The option “Any” is used to handle the fact that Zettle cannot handle a variant (product variation) in Zettle that can have any option. In WooCommerce this is used when the variation (variable product) have two options (an example could be “Size” and “Color”).  

The product variation in WooCommerce can be configured to have a variation (in this example the variation could be of the color red but can have any size and thus give this one SKU and price.  

In Zettle this can not be done and you instead have to setup variants for every possible combination.