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Suresh Gonepudi asked Suresh Gonepudi edited

How to subscribe Webhook for Ringcentral app(platform Type Browser based) in java.

Hi, we need to use webHooks in our application for Calculating Call Time Metrics using subscription api. My RingCentral app platform type is browser based so it not supporting password flow. But to use webhooks it seems like password flow is mandatory as i go through in api reference. So can you please suggest how to use webhook for platform type browser based. In java side code i am getting invalid grant type exception

while authorizing as shown in below code.


so i cannot move forward to subscribe the webhhook due to this.

This is our application Type and permissions.

App Type - Web browser (Javascript)

Access - All RingCentral customers

Available Auth Flows

Auth Code(true)



Refresh token(true)

//Getting this error

Exception in thread "main" com.ringcentral.RestException: HTTP Response


status code: 400

Server: nginx

Date: Fri, 27 Nov 2020 07:33:06 GMT

Content-Type: application/json;charset=utf-8

Content-Length: 201

Connection: keep-alive

X-Application-Context: application:8080

Content-Language: en

RCRequestId: ca86af14-3082-11eb-8643-00505681d4a6

Pragma: no-cache

Cache-Control: no-store

AceRoutingKey: sjc01-c01-ace02.578329d6-06d0-11eb-a999-005056973b9b

RoutingKey: IAD01P10


"error" : "unauthorized_client",

"errors" : [ {

"errorCode" : "OAU-251",

"message" : "Unauthorized for this grant type"

} ],

"error_description" : "Unauthorized for this grant type"


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0 Answers

Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys