I\'m trying send my app(custom keyboard) for submit and catch this error:
The Bundle Identifider is case sensitive.
For me, I have to change in the "Supporting Files" - Info.plist - Bundle Identifer from com.nebitrams.$(PRODUCT_NAME:rfc1034identifier) to com.nebitrams.dandelion123
After that it works since it matches the letter case in iTunesConnect Bundle Identifier.
Make sure the following two values match:
Im my case I created the app with given Bundle ID, then created identifier and provisioning profiles on Apple Developer but forgot to add new app in iTunes Connect.