I tried to execute gmail api's watch on my two gmail accounts and it works fine.
But when the other user tried to do so, it shows this error:
HTTP error 400 : "Only one user push notification client allowed per developer (call /stop then try again)">
I don't know if the problem is on the pub/sub client configuration or doing stop and watch will resolve the problem?
Can someone explain the meaning of this statement "Only one user push notification client allowed per developer"?
Whenever you get a new email sent to your Gmail, you can now get a push notification sent to your mobile device. You will need to install the Power Automate app for iOS or Android to use this flow.
The Gmail API uses the Cloud Pub/Sub API to deliver push notifications. This allows notification via a variety of methods including webhooks and polling on a single subscription endpoint.
Try using a different project for the Cloud Pub/Sub topic that the other user wants to set up a Gmail API watch on.
You can always renew a watch by first stopping the watch and then immediately initiating a new watch right after. So, try to use users.stop once before you use users.watch.
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