Getting error 401 in APIkey header with $http get and XMLHttpRequest but it's working with postman,Getting error 401 with $http get and XMLHttpRequest but it's working with postman

[#1]

I have received a api from client and when I am trying to integrate it with angular service, getting 401 unauthorized error. But same is working with POSTMAN. Please suggest me if I am doing anything wrong.

Here is the code which I am trying:

$http({
       url:"https://xxx_test.com/data?sdate=date",
       method:"GET",
       headers:{'apikey':'key'},})

This is the response that I am getting :

{"fault":{"faultstring":"Failed to resolve API Key variable request.header.apikey","detail":{"errorcode":"steps.oauth.v2.FailedToResolveAPIKey"}}}

Console log:

angular.js:12265 OPTIONS apiurl?start_date=04/26/2018&end_date=04/26/2018 401 (Unauthorized) :3000/#/pos:1 Failed to load apiurl?start_date=04/26/2018&end_date=04/26/2018: Response for preflight has invalid HTTP status code 401.

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I have received a api from client and when I am trying to integrate it with angular service, getting 401 unauthorized error. But same is working with POSTMAN. Please suggest me if I am doing anything wrong.

Here is the code which I am trying:

$http({
       url:"https://xxx_test.com/data?sdate=date",
       method:"GET",
       headers:{'apikey':'key'}})

This is the response that I am getting :

{"fault":{"faultstring":"Failed to resolve API Key variable request.header.apikey","detail":{"errorcode":"steps.oauth.v2.FailedToResolveAPIKey"}}}

Console log:

angular.js:12265 OPTIONS apiurl?start_date=04/26/2018&end_date=04/26/2018 401 (Unauthorized) :3000/#/pos:1 Failed to load apiurl?start_date=04/26/2018&end_date=04/26/2018: Response for preflight has invalid HTTP status code 401.