how to prevent a record from saving on a beforeSubmit User Event Script

AI generated answer (using internal Slack threads):

To prevent a record from saving in a beforeSubmit User Event Script in NetSuite, you would need to throw an uncaught error. This method might seem a bit unconventional, but it works effectively. Here is a simple example of how you can do this:

javascript
function beforeSubmit(context) {
    if (context.type === context.UserEventType.CREATE || context.type === context.UserEventType.EDIT) {
        throw nlapiCreateError('E9999', 'You cannot save this record.', true);
    }
}

In the above code, we are throwing an error in the beforeSubmit function if the user is trying to create or edit a record. The error message 'You cannot save this record.' will be displayed to the user and the record will not be saved. Please note that you cannot show a popup in beforeSubmit. You could potentially do this in a client script in onSave, but that would only run in edit/create not view. Another option is to move the logic to afterSubmit and if the record shouldn't have been allowed to be created, delete it and then redirect. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******