Error codes

The stable code an error body carries. It is what a client branches on, so it outlives any wording change to the human error message beside it. The shape both live in is in Using the HTTP API.

• not_found
• conflict
• forbidden
• unauthorized
• validation
• invalid_option
• already_answered
• stale_request
• graph_error
• unknown_workflow
• unknown_node
• payload_too_large
• plugin_error
• workflow_load_failed
• unknown_pool
• registration_unavailable
• persist_failed