How to Develop API on order guide

[Rama26]

Hi,

Below is the JSON Body  i am using to create RITM in order guide. but i am not sure whether it's correct or not.

{

    "operation" : "create",

    "data" : "500MB",

    "replace" : "no"

} 

below is the scripted rest api i am written

(function process( /*RESTAPIRequest*/ request, /*RESTAPIResponse*/ response) {

    var parsedData = request.body.data;

    var action = parsedData.operation;

    var replacement = parsedData.replace;

    var data_allowlance = parsedData.data;

    var orgsysid = '4d0a3774972231101130b696f053affd';

    var cartId = GlideGuid.generate(null);

    var cart = new Cart(cartId);

    var item = cart.addItem('ec80c13297968d1021983d1e6253af32', 1);

    cart.setVariable(item, "operation", action);

    cart.setVariable(item, "is_this_a_replacement_for_a_lost_or_broken_iphone", replacement);

    cart.setVariable(item, "monthly_data_allowance", data_allowlance);

    var rc = cart.placeOrder();

    var request1 = rc.sys_id;

    var req = new GlideRecord('sc_req_item');

    req.addQuery('request', rc.sys_id);

    req.query();

    if (req.next()) {

        var reqnumber = req.number;

req.order_guide = orgsysid;

        req.update();

    }

    response = {

        data: [{

            status: "Success",

            statusMessage: "RITM Created for Order Guide",

            RitmId: reqnumber

        }]

    };

    return response;

})(request, response);

Let me know any changes i need to do