After clone of ServiceNow instance ,Okta user provisioning fails with the error:
Automatic provisioning of user Test User Williams to app ServiceNow UD failed: Error while verifying if user email@example.com exists: Errors during execution: Error executing checkUserExists: 401. User Not Authenticated. Required to provide Auth information. Error Code: null
Clone may have overwritten the sys_user record configured on the Okta end for User Provisioning .
Make sure that the Service-now user configured for user provisioning on Okta end ,exists on the instance and the password is correct.
Below screenshot shows the user that is configured on the Okta end . Please contact Okta Support if the user configured needs to be corrected.