When trying to update a listing that was created using Printify and published onto eBay, it is common to receive the error message below:
“It looks like there's a problem with this listing. Inventory-based listing management is not currently supported by this tool. Please refer to the tool used to create this listing.”
This means that you can only update the listing with the Printify tools and not using the eBay interface. In order to update the listing, head over to your Printify account and update the listing. Once done, save the updates, your updated fields will be synchronized with your eBay account.