Push Notification: The Distribution/Development Apple appId is invalid.

I want to use Push Notifcation with the DPS Pro Edition.

I have created all needed Apple certificates (Developer, Developer Push, Distribution, Distribution Push).

Push Notification was enabled at creating the Apple App ID

Then I wanted to add the certificates: https://notification.digitalpublishing.adobe.com/notification/index.html#/cert

But the following error appears.

What am I doing wrong?

Thanks for your help.

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