Welcome to the RingCentral Community

Oh, ok.Our API is working only for users already registered in Glip (It's temporary limitation).
So you need to sign up via RC in Glip (https://glip.devtest.ringcentral.com/). And after that API will start working.

Best regards,
Alexey Sobolev

Hi Alexey,

Getting this curl -XGET -i -H "Content-Type: application/json" -H "Authorization: Bearer $token" 'https://platform.devtest.ringcentral....'

HTTP/1.1 404 Not Found
Server: nginx/1.10.2
Date: Fri, 02 Jun 2017 10:43:09 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 23
Connection: keep-alive
ETag: W/"17-5mp6bJHiwmgD8/Sf63qIPw"
X-Server-Name: sjc06-c01-hlb01
X-Request-Time: 0.080
X-Upstream-Server: 10.24.21.167:56314
X-Upstream-Status: 404
X-Upstream-HTime: 0.080
X-Upstream-RTime: 1496400189.474
X-Upstream-CTime: 0.000
X-Tcpinfo: 1000, 500, 10, 28960
X-Rate-Limit-Group: light
X-Rate-Limit-Limit: 50
X-Rate-Limit-Remaining: 49
X-Rate-Limit-Window: 60
RoutingKey: SJC11P01
RCRequestId: 44db02fa-4780-11e7-bf71-005056bb594d

{"message":"Not Found"}

Hi, Pratap. 

Are you sure, that group with id '52626304005' does exists?
Could you, please, provide list of your groups? (GET /restapi/v1.0/glip/groups)

Best regards,
Alexey Sobolev