Getting CORS error when calling AWS API from Jquery

Getting CORS error when calling AWS API from Jquery.

CORS has enabled in API side and I can call using react > Axios but we have to use Jquery for this application.

using this code:

 $.ajax({
      type: 'POST',
      url: "https://awsapiurlhere",
      crossDomain: true,
      async:true,
      data: {
      aaa: "444",
      bbb: "aaa",
      ccc: "ccc"
      },
      dataType: 'JSON',
      cors: true ,
      contentType:'application/json',
      headers: {
          "Access-Control-Allow-Origin":"*",
      },
      success: function(response, status, xhr) {
        if (response) {
          console.log("The username you typed has been used!", status);
        } else {
           console.log("No responce" , status);
        }
      },
      error: function(xhr, status, error) {
       console.log("Something went wrong!", status );
      }
    });

getting

Access to XMLHttpRequest at 'https://url' from origin 'https://cdpn.io' has been blocked by CORS policy: Request header field access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response.