Received unexpected response code: 401

[tokenDeveloper2020]

It was working fine few months back. Now when trying to run "AlternatePushChannel.SampleApp" its throwing error

at _webPushClient.SendNotificationAsync( getting error
Headers: {x-wns-error-description: AppId is not allowed to post Webpush notifications to WNS
Strict-Transport-Security: max-age=31536000; includeSubDomains
Date: Fri, 01 Jul 2022 03:16:44 GMT
x-wns-status: dropped
x-wns-notificationstatus: dropped
ms-cv: eXJI1AUNQ0KwOrCZLNPfvQ.0
x-wns-debug-trace: BL2PEPF0000958B
x-wns-msg-id: 2A2C4C264C920F83

Received unexpected response code: 401

[tokenDeveloper2020]

Above error comes if we change Identity Name and publisher

[nbevans]

https://learn.microsoft.com/en-us/answers/questions/1695964/wns-push-notification-fails-with-unauthorized-appi