Blank? I'd expect Xcode to volunteer to do that for you...
What version Xcode? Auto or manual codesigning? Paid & active Developer Program account or Xcode's free provisioning?
BundleID docs are here, BTW: https://developer.apple.com/documentation/appstoreconnectapi/bundle_ids
I am running version 10.3, I have have the free account and I dont know about codesigning. I dont want to put this on the appstore I just want learn to code. I am just playing around with this app. Am I supposed to do something with the URL it gives me? (in the link)
Sorry I am very new to this
(Edit) codesigning is on auto
>I have have the free account
See this thread [how i can have free Developer Program ] with an already moderated link that explains Xcode's free provisioning process (with screenshots) - be sure to read all the way thru it and any updates at the bottom.