Sneaker listings created on the mobile app must be edited individually ???

[squiz]

What is this message about  that keeps coming up when I try  to bulk edit any items.

"2 listings not processed. Sneaker listings created on the mobile app must be edited individually."

[papso22]

Sorry to seem dim, but isn't it about what it says?

Seems a very specific message to me.

[squiz]

I've never sold any sneakers