Adding host (VM) to Red Hat Satellite 6.4 throws error

When I try to run bootstrap command I get below error: RUNNING], [2019-05-13 13:58:15], [Calling Foreman API to create domain mytestdomain.com associated with the org & location] An error occured: HTTP Error 422: Unprocessable Entity url: https://redhat-satellite-64.mytestdomain.com:443/api/v2/domains code: 422 data: { "domain": { "location_ids": [ 2 ], "name": "mytestdomain.com", "organization_ids": [ 1 ] } } error: { "error": { "errors": { "name": [ "has already been taken" ] }, "id": null, "full_messages": [ "Name has already been taken" ] } } Can anyone please advise?