Yes. That’s correct. That is your Developer Team ID.
Still making no progress with this.
I have looked into the plist properties and notice that there are 2 entries viz:
LSIItemContentTypes and UTTTypeIdentifier, both of which contain the bundleID together with a pointer to a file type for saving preferences (ie -pfPrefs). I updated both to both to be consistent with BundleID but on building the app, the resulting plist in the built app reverts them to their previous value, i.e. not the values shown within the plist editor.
I sent a private message to you. It would be good to know your Mac setup (macOS version, Xcode version, etc).
Still… being the “.pkg” using the bundle id as the file name… seems really odd to me.
for the error:
If I use the ID from the Developer certificate - I get the error “The Developer ID value has to be the full Apple Distribution string”
On Xojo “Developer ID” field, you must include the “Apple Distribution:” string, like this:
Everything is fine. Except this:
The point is: If I use the Transporter it runs through and the App is in the AppStore. If the AppID would be wrong, this would not happen. So there must be SOMETHING which Xojo does different than the Transporter?
Again the question: My fault or Xojo-Problem? If it is my fault please tell me where to look. If it is Xojo internal I would appreciate it very much if it would be fixed one day.
Did you updated to macOS 26?
No, I am still on Squoia 15.6.1 … ! No problem, Transporter is OK for now 
It’s more likely from an Apple change in Xcode. This is part of the reason that Profile Triage uses Apple’s Rest API to do as much as it can because it’s much more stable than using Xcode’s tools from year to year.
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