Using scripted rest api new record created instead of skip

[Rama26]

Hi All,

below is the script that i written to create new records in subnet table using scripted rest api using postman

var requestBody = request.body.dataString;
var parser = new global.JSON();
var parsedData = parser.decode(requestBody);

var subnet = parsedData.subnet;

 var subnet = new GlideRecord('cmdb_subnet');

for (var i = 0; i < subnet.length; i++) {

var id = "/subscriptions/" + id + "/subnets/" + subnet[i];

subnet.addQuery('object_id', id);

subnet.addQuery('state', 'Available');

subnet.query();

if (!subnet.next()) {

subnet.initialize();

subnet.name = subnet[i];

subnet.object_id = id;

subnet.insert();

}

}

Using above script if the records not available in table i am able to create new records. but when i pass same data 2nd time at that time also it's creating new record instead of skip. how can i fix