how do you return a 400 error from a resltet?

AI generated answer (using internal Slack threads):

In NetSuite, you can't directly set the HTTP status code for a RESTlet. The only status code you can force is a 400 error, which is done by throwing an uncaught error in your RESTlet. Here's an example of how you might do this:

javascript
function onRequest(context) {
    try {
        // Your code here
    } catch (error) {
        throw error; // This will result in a 400 error
    }
}

In this example, any errors that occur in your code will not be caught, and will instead be thrown, resulting in a 400 error. Remember, it's generally a good practice to catch and analyze errors, then throw the ones you want to throw. However, if you want to force a 400 error, you should let the error go uncaught. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******