Same issue. Apple is useless and I can't believe the world supports them. I accidentally registered the app under the wrong account. And now I can't delete the identifier because "it's being used by the app store" even though the app was never published. And I can't create an identical bundle identified in the other account. I will need to break company policy and change the way the bundle identifier is supposed to be to get around this.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
Tags: