Oauth access token issue in webMethods10.1 with OKTA – third party authorization server


We have created oauth connection under “External Authorization Servers” to OKTA in webMethdos10.1 successfully.

Created scope in WebMethods (resource server) and provided the same details to OKTA.

Created client application in okta (webMethods as a client) & registered the client in webMethods.

Able to get required inputs to get the access token such as clientID, authorization code, redirect URI and etc.

When we try to get the access token from OKTA it is always returning 404 error return code.

Can someone help us to move further?