Deliverables that cannot be delivered
A simple way to catch yourself in a category error when you are naming deliverables it to ask yourself, "Can this actually be delivered?"
Is it something specific - so that a person or group could be held accountable for managing its delivery? If someone came to you and told you that you are responsible for delivering that particular thing, would you know what to do?
Some examples
People often identify "knowledge" as a deliverable. If you were responsible for delivering knowledge, the first thing you would need to ask in order to do that would be, "What kind of knowledge?" The specific kind of knowledge might be market intelligence. So, which would be more understandable as something you need to deliver, knowledge - or market intelligence? Market intelligence, of course.
Would you deliver responsiveness - or a quick response?