Lookup company in staging environment

I'm trying to test company lookups using https://api-staging.b2brouter.net/directory/{scheme}/{id}

But this always returns:
{
"error": {
"code": "resource_missing",
"message": "Company not found in directory",
"param": "id",
"request_log_url": "https://app-staging.b2brouter.net/api_requests/xxxxxxxxxx",
"type": "invalid_request_error"
}
}

Is this because there are no "live" lookups possible in the staging environment? How can I test this API functionality?