alfresco-js-api Login issues with Multi-Tenant User

[vikashsingh009]

I have created user from Alfresco Admin Dashboard and try to pass username and password while calling alfresco-js-api ,here is the piece of code

var AlfrescoApi = require('alfresco-js-api');

var hostEcm = '<alfresco -host-ip>';

var alfrescoJsApi = new AlfrescoApi({
    hostEcm: hostEcm
});

alfrescoJsApi.login('username@tenat.com', 'password').then((data) => {
    console.log(data);
    done();
}, (error) => {
    console.log('error debug: ' + JSON.stringify(error));
});

its getting Un-Authorise Error while Returning Ticket

error debug: {"error":{"status":401,"response":{"req":{"method":"POST","url":"http://127.0.0.1:8080/alfresco/api/-default-/public/authentication/versions/1/tickets","data":{"userId":"vikash","password":"bizruntime@123"},"headers":{"user-agent":"node-superagent/3.4.1","authorization":"Basic dmlrYXNoOmJpenJ1bnRpbWUlNDAxMjM=","content-type":"application/json","accept":"application/json"}},"header":{"server":"Apache-Coyote/1.1","www-authenticate":"Basic realm="Alfresco -default- tenant"","content-length":"0","date":"Wed, 12 Apr 2017 11:33:16 GMT","connection":"close"},"status":401,"text":""}}}