50200: Programmable Chat: User not foundERROR: 50200error-50200 page anchorERROR Error - 50200error---50200 page anchor IP Messaging: User not foundip-messaging-user-not-found page anchor Possible Causespossible-causes page anchor Specified User does not exist. Possible Solutionspossible-solutions page anchor Confirm a valid User is being passed in request.