NetSuite：在记录保存上的项目收据上显示警报不起作用

The purpose of my script is to display a message to the user when they save an item receipt after comparing two line items. If the item and location match, the alert pops up. I've never built a successful script and this is my first time using line items. Right now, the script will allow the user to click the save button but the record will not submit regardless of whether the item and location match. Also, the alert message does not pop up. The purpose of my script is to display a messag