How to use saveResponseBodyAsAttachment?

[Suggy]

How to use saveResponseBodyAsAttachment?

I have written the script like this:

var tablename = 'incident';

var recordSysId = 'XXXXXXXXXXXXXXXXXXxx';

var filename = 'sampleupload.txt';

var request = new sn_ws.RESTMessageV2();

request.setHttpMethod('get');

request.setEndpoint('https://xxxxxx.service-now.com/api/now/attachment/xxxxxxx/file');

request.saveResponseBodyAsAttachment(tablename, recordSysId, filename);

request.setBasicAuth('xxxxx', 'xxxxxx');

var response = request.execute();

var httpResponseStatus = response.getStatusCode();

var httpResponseContentType = response.getHeader('Content-Type');

var newAttachmentSysId = response.getResponseAttachmentSysid();

var parsed;

var httpResponseBody;

gs.log("http response status_code: " + httpResponseStatus);

gs.log("http response content-type: " + httpResponseContentType);

gs.log(newAttachmentSysId);

Getting result as below:

*** Script: http response status_code: 404

*** Script: http response content-type: application/json;charset=UTF-8

*** Script: null

Note - Script reference: https://developer.servicenow.com/blog.do?p=/post/saving-restmessagev2-responses-as-attachments/Savin...

[JOADSONT]

Which role does it require?