This simple error may seem confusing or completely halt your progress while in a state of blissful productivity but don't let it throw you off.
This error message is letting you know that you do not currently have Repricing or Managed toggled on for your marketplace - this allows Aura to either receive data from Amazon (Managed) or send data to Amazon (Repricing).
To fix this little issue and get back to your workflow, navigate to the Marketplace page within the application and make sure that both Managed and Repricing are toggled on.
If you do not see a marketplace on the page, you'll need to add a new Marketplace to Aura first.
After you've made sure to toggle on both settings, you can head back to your listings page and begin toggling on repricing so Aura can begin increasing your sales 🎉