OKTA Sales Force Integration - Provisioning Not Setting up


I was trying to integrate with Okta with Sales Force.I have created the OAuth keys and at the time provisioning when I am trying to authenticate with Salesforce.com, it is not getting authenticated.

The message is coming as “Could not verify the salesforce administrator credentials; please confirm these are set correctly”

I followed all the correct steps but I think I am missing something. Can any one help please?