CCAR-F objective 2.2 · Domain 2 · 18% of the exam

Structured Error Responses

One decision follows a failure, and it is whether trying again could work. That makes retryability the property a structured error has to state rather than leave the agent to infer from a message. A timeout may succeed unchanged; a malformed argument never will; a closed account is a business fact that will not move, so the useful output is a reason the user can be told. The other half of the objective is refusing to collapse distinct facts: nothing found and could not look are different, and a tool that returns an empty list for both leaves the agent reporting the only reading it has.