Can not manage (delete / disable / create) a pin created from api and deleted from app

Hi have succesfully created, disable and deleted a key pad pin using api.
But while testing I have created a PIN via API and deleted from the APP.
Now I can not manage that pin id anymore. I can not delete / update it. So I can not create that PIN number because it already exist.
How can I fix this problem ?

Try to delete it from nuki web over browser.

Same problem here.
PIN generated via API and cannot be deleted or updated. Also not via Nuki Web.

After sync PIN via API I manage to delete

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True. I can even confirm that. Thanks for the tip.
However, a smartlock has a low battery and refuses to sync. I suspect that is so “intentional”?