azure - Cant register phone to the notifications hub server -


my device not getting registered notification hub. im getting error code 400.

im getting issue when run code:

error domain=windowsazuremessaging code=400 "urlrequest failed <nsmutableurlrequest: 0x170013f20> { url: https://<hubname>.servicebus.windows.net/<hubname>/registrations/2044525541292942848-4457854038111768645-1?api-version=2013-04 } status code: bad request" userinfo={nslocalizeddescription=urlrequest failed <nsmutableurlrequest: 0x170013f20> { url: https://<hubname>.servicebus.windows.net/<hubname>/registrations/2044525541292942848-4457854038111768645-1?api-version=2013-04 } status code: bad request}


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