Which description corresponds to code 404?

• A. Accident
• B. Prowler
• C. 9-1-1 Disconnect
• D. Unknown Trouble

Answer: (D)

Code 404 is used when the exact nature of the incident isn’t clear from the caller’s information or initial report. In the 400-series system, Unknown Trouble serves as a catch-all label for situations that are uncertain or ambiguous, signaling that responders should proceed with caution and seek more details or conduct follow-up to determine the specific type of incident. This keeps the response flexible and ensures resources are available for further investigation without prematurely classifying the event.

It isn’t an accident, a prowler situation, or a 9-1-1 disconnect because those have more specific meanings and criteria. An accident implies a vehicle crash with identifiable details; a prowler refers to a suspected intruder with a clear disturbance; a 9-1-1 disconnect is a distinct call involving a dropped or disconnected call where the caller may still be on the line or can provide context. When none of those fit, Unknown Trouble is the most accurate description, guiding follow-up questions and on-scene assessment to clarify the situation.