I was trying to find out the internal id of the item sublist in Site Category screen. But wasn’t able to find any solution from the NS help center.

After a little bit of research, found “presentationitem” will be the sublist internal id instead of “item”. And also for the item column.

Code:-

var loadCategory = nlapiLoadRecord("sitecategory", "1234");   //--- Load the site category record.


var presentationItemID = loadCategory.getLineItemValue("presentationitem", "presentationitem", lineIndex);  //--- To get the value.

 

loadCategory.setLineItemValue("presentationitem", "presentationitem", lineIndex, "1234 INVTITEM");  //--- To set a line.


loadCategory.removeLineItem("presentationitem", lineIndex);  //--- To remove a line item.

NOTE: While adding a new line item to the record you need to use “presentationitem” as the sublist column internalid. If you use “item” it gives an error.