The "keys" under the banner tab refers to "categoryDesc" in the product data.

Basically the “key” links the banners imageURL to the correct banner.

 

Collection > Display > Banners > 

 

As an example I am using my own demo collection.

 

Within my product data I gave the product a categoryDesc.(To categorize products in the app)
 

 

 


 

 

In the backend you can link the banner to a category (with the setting: Keys) (in my example: Pants


This links the "imageURL" to the correct banner within a category

 

No Key (not filled in) = Front page banner (category overview)


 

 

 

* = One image for banners without a key (You can use this for one generic banner)

If you want a banner to be generic (no specified category) use the wildcard *. This will apply the banner to every location that has not been specified with a “ banner key”