API Error Codes

Below you can find the complete list of errors that are returned by the API together with the description, API code, and corresponding HTTP status of each error.

Name	HTTP Status Code	HTTP Status	Stream Code	Description
Input Error	400	Bad Request	4	When wrong data/parameter is sent to the API
Duplicate Username Error	400	Bad Request	6	When a duplicate username is sent while enforce_unique_usernames is enabled
Message Too Long Error	400	Bad Request	20	Message is too long
Event Not Supported Error	400	Bad Request	18	Event is not supported
Channel Feature Not Supported Error	400	Bad Request	19	The feature is currently disabled on the dashboard (i.e. Reactions & Replies)
Multiple Nesting Level Error	400	Bad Request	21	Multiple Levels Reply is not supported - the API only supports 1 level deep reply threads
Custom Command Endpoint Call Error	400	Bad Request	45	Custom Command handler returned an error
Custom Command Endpoint Missing Error	400	Bad Request	44	App config does not have custom_action_handler_url
Authentication Error	401	Unauthorised	5	Unauthenticated, problem with authentication
Authentication Token Expired	401	Unauthorised	40	Unauthenticated, token expired
Authentication Token Before Issued At	401	Unauthorised	42	Unauthenticated, token date incorrect
Authentication Token Not Valid Yet	401	Unauthorised	41	Unauthenticated, token not valid yet
Authentication Token Signature Invalid	401	Unauthorised	43	Unauthenticated, token signature invalid
Access Key Error	401	Unauthorised	2	Access Key invalid
Not Allowed Error	403	Forbidden	17	Unauthorised / forbidden to make request
App Suspended Error	403	Forbidden	99	App suspended
Cooldown Error	403	Forbidden	60	User tried to post a message during the cooldown period
Does Not Exist Error	404	Not Found	16	Resource not found
Request Timeout Error	408	Request Timeout	23	Request timed out
Payload Too Big Error	413	Request Entity Too Large	22	Payload too big
Rate Limit Error	429	Too Many Requests	9	Too many requests in a certain time frame
Maximum Header Size Exceeded Error	431	Request Header Fields Too Large	24	Request headers are too large
Internal System Error	500	Internal Server Error	-1	Triggered when something goes wrong in our system
No Access to Channels	403	Unauthorised	70	No access to requested channels
Message Moderation Failed	400	Bad Request	73	Message did not pass moderation