ServiceNow integration with Postman

[dipanjansaha47]

Hello,

I am trying to send an attachment via Scripzted Rest API from Postman to ServiceNow for the incident table.

For the attachment I have written the below code in Global scope application.

I am receiving an error "

Can't find method com.glide.ui.SysAttachment.write(string,string,string,string,string). (sys_ws_operation.3e37358093234a10c796718efaba10f8.operation_script;

"

Kindly let me know what is the exact issue in the code

Regards,

Dipanjan Saha

(function process(/*RESTAPIRequest*/ request, /*RESTAPIResponse*/ response) {
    try {
        var requestBody = request.body.data;
        var shortDescription = requestBody.short_description;
        var description = requestBody.description;
        var fileData = requestBody.file_data; // Base64 encoded file data
        var fileName = requestBody.file_name;
        var contentType = requestBody.content_type; // e.g., "image/png"

        // Log the incoming request data for debugging
        gs.info('Request received: shortDescription=' + shortDescription + ', description=' + description + ', fileName=' + fileName + ', contentType=' + contentType);

        // Create Incident
        var incidentGr = new GlideRecord('incident');
        incidentGr.initialize();
        incidentGr.short_description = shortDescription;
        incidentGr.description = description;
        var incidentSysId = incidentGr.insert();
        
        gs.info('Incident created with sys_id=' + incidentSysId);

        // Validate the file data
        if (!fileData || !fileName || !contentType) {
            throw new Error('Missing file data, file name, or content type');
        }

        // Attach file to incident
        var attachment = new GlideSysAttachment();
        var decodedFileData = GlideStringUtil.base64DecodeAsBytes(fileData);
        attachment.write('incident', 'incidentSysId', 'fileName', 'contentType', 'decodedFileData');
        
        gs.info('File attached to incident with sys_id=' + incidentSysId);

        // Return the incident sys_id
        var responseBody = {
            sys_id: incidentSysId
        };
        response.setStatus(201);
        response.setBody(responseBody);
    } catch (ex) {
        gs.error('Error processing request: ' + ex.message);
        var errorResponse = {
            error: ex.message
        };
        response.setStatus(400);
        response.setBody(errorResponse);
    }
})(request, response);

[Nicholas_Gann · Accepted solution]

The error suggests you may not be using the GlideSysAttachment class correctly. Looking at the documentation, it seems to support that.

See below:

GlideSysAttachment - Global (servicenow.com)

Looking at your script above, you have fed .write() 5 strings instead of feeding it parameters inline with the image above

I would have expected:

var attachment = new GlideSysAttachment();
var decodedFileData = GlideStringUtil.base64DecodeAsBytes(fileData);
attachment.write(incidentGr, requestBody.file_name, requestBody.content_type, decodedFileData);

[dipanjansaha47]

Hello,

It worked for me now.. The url i was using to convert the image to base 64 was giving a wrong output so I changed the URL to "https://base64.guru/converter/encode/image" and converted my image.

now everything is working fine for me.

Thanks a lot for your help.