2639934 - HTTP OAuth 2.0 Client Credentials Grant call to <Authorization URL> not successful in REST receiver channel

You are using REST receiver channel and have configured OAuth 2.0 Client Credentials Grant flow. The channel configuration looks like below:

Client ID and Client Secret is passed in the channel configuration. But REST receiver channel fails with below error:

Fatal error while processing inbound message. com.sap.aii.af.lib.mp.module.ModuleException: com.sap.aii.adapter.rest.ejb.common.exception.HttpCallException: HTTP OAUTH 2.0 CLIENT CREDENTIALS GRANT call to <Authorization URL> not successful. Error while obtaining access token - response code: 400 response:{"error":"invalid_grant","error_description":"The clientId must be supply."}

SAP NetWeaver 7.5

Rest receiver, OAuth 2.0, Client Credentials Grant, access token, Bearer, BearerToken, HTTP, Header, Query, Process Orchestration 7.5, PI 7.5, PO 7.5, AEX , KBA , BC-XI-CON-RST , Rest Adapter , Problem