System Error Codes

This section provides insight into Chat Flow's system error codes. Each of these error codes are associated with a cause, providing flow-builders the ability to debug flows.

System Terminology

Item	Description
Engine	Chat Flow back-end; controls transportation of inbound & outbound content
Gateway
Flow Config	This represents issues relating to flows being incomplete or incorrectly built
WhatsApp Adapter	Channel adapter for the WhatsApp channel; controls inbound & outbound transportation of messages between the user and the workflows developed on Chat Flow

Error Codes

Code	Description	Cause	Location/Service
CT01	Non Recoverable Error	Error constructing response in Engine, or next step is not found	Engine
CT02	Non Recoverable Error	Session is missing when preparing response in Flow Engine	Engine
CT03	Generic Gateway Error	Unhandled error on incoming request to Gateway	Gateway
CT04	Missing Next Step	Next step missing in flow	Flow Config
CT11	Read Timeout	Timeout between our services	Gateway
CT12	Read Timeout	Timeout between our services	Engine
CT21	Unhandled Error	Unhandled Error Occurred	Engine
CT22	Unhandled Error	Unhandled Error Occurred	WhatsApp Adapter
CT40	Session Closed	Session being referenced has already been terminated	Gateway
CT51	Unhandled Http Response	Unexpected/Unhandled response. i.e. missing "other" case in flow	Flow Engine/Flow Config