@alien4u Thank you for response. The problem I’ve encountered is that after sending post request from client I can’t update current form in the suitelet, browser doesn’t renders new page for some reason, I assume I’ve made a mistake somewhere, but I can’t see it:

https.post.promise({
            url: '<https://system.sandbox.netsuite.com/app/site/hosting/scriptlet.nl?script=111&deploy=12>',
            body: {first: 'one', second: 'two'}
        })