Problems submitting an App Clip

We're trying to submit an App Clip , and the process is the same as before. but when we push it to TestFlight we get an error like below:

Asset validation failed Invalid bundle identifier. The bundle identifier 'com.xxxxx.xxxx.clip' of the app clip '***.app/AppClips/Clip.app' conflicts with the bundle identifier of an existing app that you have submitted. Create a unique bundle identifier for your app clip. (ID: 2a59d2c9-f0d4-44c3-830d-34b5847bf44d) (90846)

We haven't made any changes to the appclip and the parent app in the latest version, include code or config .

so what should we do ?