In Push notification the tutorial which you have provided i am follwing steps
but from Creating RegisterDevice service and next steps i am not able to get the excatly what it is trying to do..
Can you please provide me some details or demo app so that i can follow it
Please tell us exactly what you tried and what doesn't work.
Hi,
I am following steps of the document, but in FileDB_settings service_url, do i need to write same default value ?
Ishani,
Yes, you should specify the same value.
ok thanks 
i applied the same values but in GetChannels service i am not able to get response it shows 405 method not allowed error.
so how would get the database ?
Ishani,
Please share your application with a href="mailto:support@appery.io" rel="nofollow"support@appery.io/a
should i send you username password. ? I am not able to send you mail link support is not opening
ok thanks i have shared project with support
Ishani,
Add parameter 'where' and paste the following code in its mapping:
precodereturn '{"_id":"' + value + '"}'; /code/premap to 'userId' as showed in the above screenshot.