As another said, reasonable and articulable suspicion is required to id in every state and city in the country regardless of any lower laws or department policies. However(!), they do not have to share that reasonable suspicion with you at all, and can still demand ID without giving it to you. They can have reasonable suspicion against you that you are not aware of, such as matching a description for a crime you’re not involved in. And They could very well have no reasonable suspicion and can lie in the report later if they need to justify it. So long as there isn’t evidence contradicting them, the cop’s word is assumed as fact. So a demand for ID that is lawful is indistinguishable from an unlawful one if they don’t give you the details of their suspicion because you have no way to know if such reason exists or if it’s reasonable or not.