sofi has several boundary areas the first is the nlu model boundary, which controls intents, entities, and features in sofi the second area is quota limits based on key type area limit intents 500 list entities parent 50, child 20,000 items simple 30 utterance 500 characters utterances 15,000 do not use the following characters in intent and entity names character name { left curly bracket } right curly bracket \[ left bracket ] right bracket \ backslash updated about 5 years ago