SailPoint > ISC I am tryng to create web service based source connection (with VA), getting invalid client errors (unable to generate token). Both custom authentication, client credentials options tried and it fails. It works through Bruno (similar to postman) api client with OAuth2 client_creden…

Thank you all for replies and suggestions. We were able to fix this issue, steps followed are: Selected Authentication type as custom authentication in connection settings. Filled user name, password, baseURL, client id, secret Added custom authentication in http operations, provided token ur…

Hi @rvemula , you can see this topic and get help . Also check for configurations you done. Thank you.

Hi Pravin Thank you for response. It is basic authentication used from the topic you have shared. I need steps for using oauth2 > client credentials and custom authentication

Hi @rvemula , If you have username and password please try with Basic Authentication Type. If still you are facing the issue i think you can write the rule to generate the token. Thank You!

Hi ramesh use custom authentication and place your url only there and go to http operations and select test connection give url and client id and seceret code and do test connection your connection will be successfull

Message: 400 : Bad Request : {“error”:“invalid_request”,“error_description”:“grant_type is required for issuance”}, HTTP Error Code: 400 I have added grant_type and same error after I saved and tested

[image] Ramesh Vemula: I have added grant_type and same error after I saved and tested For clarity, you have tried both “grant_type = Password” and “grant_type = Client Credentials” along with their respective credential values, and you received that same error? Since I am unfamiliar with Br…

Web service connection fails invalid client error

Identity Security Cloud (ISC) ISC Discussion and Questions

rvemula (Ramesh Vemula) April 15, 2025, 9:58am 8

Thank you all for replies and suggestions.

We were able to fix this issue, steps followed are:

Selected Authentication type as custom authentication in connection settings. Filled user name, password, baseURL, client id, secret
Added custom authentication in http operations, provided token url. In body Raw settings, as per below screenshot.

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Web service connection fails invalid client error

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