Created: May 23, 2017
It's important to know that not all sublists in NetSuite are scriptable. Last week in the NetSuite Professionals Slack room, someone was asking how to add to the Contacts sublist on a Vendor record. To answer the question, I went to the Help page titled " Scriptable Sublists" and saw that "Contacts" was not listed there.
"Scriptable Sublists" is a very useful reference page to keep handy. It will help you to identify whether you can script a specific sublist directly or that you'll need to take a different approach.