creating RITM using inbound action and cart api

[Rahul Raja Sami]

Hi 

Trying to create RITM using inbound action and below cart API

target table: sc_req_item

createRequest();
function createRequest() {
var cartId = GlideGuid.generate(null);
var cart = new Cart(cartId);
//give sys_id of catalog item
var item = cart.addItem('0498ad2987472450d0d4ca27cebb35cc', 1);
cart.setVariable(item,"requested_for", gs.getUserID());
cart.setVariable(item,'short_description',email.subject);
cart.setVariable(item,'please_select_the_request','Active Directory');
var rc = cart.placeOrder();
var tsk = new GlideRecord('sc_task');
tsk.addQuery('request', rc.sys_id);
tsk.query();
while (tsk.next()) {

tsk.assignment_group = 'd625dccec0a8016700a222a0f7900d06' ;// add your value
tsk.short_description = email.subject;
tsk.description = email.body_text;

tsk.u_sub_category = 'Active Directory'; //add your value

}
}

but after using this the sys email table target record is getting updated and this error showing on the log

error

and 2 RITM's are getting created

why this is happening?

[Rahul Raja Sami]

what I observed is 

when I use current.insert() in my code, the result is

when I don't use current.insert();

[Mike_R]

If you are open to using flow designer, this can be very easily achieved with no scripting

[Rahul Raja Sami]

ya mike, we can do that.

but I want to know why this is not working fine?

[Mike_R]

It’s because inherently an inbound action creates a new record on the target table. 
and then your are also creating a new record using script. Therefore that’s why there are two ritms created

[Rahul Raja Sami]

then what is the solution ?