Error in Fetching Access Token, Invalid client

[harshjainfcb]

I have tried fetching it by every possible way shared in the documentation. Still not able to solve it.

{
"message": "POST failed: HTTP/1.1 400 Bad Request (url = https://idbroker-b-us.webex.com/idb/oauth2/v1/access_token, request/response TrackingId = ROUTER_62B16B84-09E2-01BB-5FE6-0AFE49B15FE6, error = '(invalid_client) Invalid client')",
"errors": [
{
"description": "POST failed: HTTP/1.1 400 Bad Request (url = https://idbroker-b-us.webex.com/idb/oauth2/v1/access_token, request/response TrackingId = ROUTER_62B16B84-09E2-01BB-5FE6-0AFE49B15FE6, error = '(invalid_client) Invalid client')"
}
],
"trackingId": "ROUTER_62B16B84-09E2-01BB-5FE6-0AFE49B15FE6"
}