Hello Guys,

I'm trying to execute the following ajax request from my SB1 application and it gives me error.
jQuery.ajax({
  type: "POST",
  url : "https://emwstest.globenet.hu/emedworkspraxis/api/User/Post",
  beforeSend: function (xhr) {
    xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
    xhr.setRequestHeader("Authorization", "Basic " + btoa("username:password"));
  },
  data: { Username:"username" },
  success: function(xhr) {
    // I would like to get here
  },
  error: function(xhr) {
    // I am getting here
  }

Response text is the following: \n \n \nIIS 8.5 Detailed Error - 412.0 - Precondition Failed \n \n