What you are facing is that deviceId's that are no longer used will removed by google, UPS will get informed about that and will remove the device from it's database as well. But this will take some time, so either you wait for this to happen or you go into the UPS console and disable the devices there.

Hope this answers your question

On Mon, Feb 15, 2016 at 2:18 PM, aamagdi <aamagdi@ejada.com> wrote:

Hi,

I am facing the below scenario with android devices but I don't know if
there a workaround for it:

1- Install a mobile application that support push notification and connected
to UPS server in android device
2- User open the application and the device registered on UPS server
3- User receive notification normally
4- User uninstall the application without his device been unregistered from
UPS
5- User install the application again and register his device in UPS
6- User receive double notification of each notification instead of one
7- with each new uninstall and reinstall of the same app, number of the
multiple notification increase by one

Is there a solution for this issue

Thanks

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Cheers,

Erik Jan