Joins an existing conversation

Required Params

• channel - ID of conversation to join ex: C1234567890

Errors the API can return:

• account_inactive - Authentication token is for a deleted user or workspace.
• channel_not_found - Value passed for channel was invalid.
• deprecated_endpoint - The endpoint has been deprecated.
• ekm_access_denied - Administrators have suspended the ability to post a message.
• fatal_error - The server could not complete your operation(s) without encountering a catastrophic error. It's possible some aspect of the operation succeeded before the error was raised.
• internal_error - The server could not complete your operation(s) without encountering an error, likely due to a transient issue on our end. It's possible some aspect of the operation succeeded before the error was raised.
• invalid_arg_name - The method was passed an argument whose name falls outside the bounds of accepted or expected values. This includes very long names and names with non-alphanumeric characters other than _. If you get this error, it is typically an indication that you have made a very malformed API call.
• invalid_arguments - The method was either called with invalid arguments or some detail about the arguments passed are invalid, which is more likely when using complex arguments like blocks or attachments.
• invalid_auth - Some aspect of authentication cannot be validated. Either the provided token is invalid or the request originates from an IP address disallowed from making the request.
• invalid_charset - The method was called via a POST request, but the charset specified in the Content-Type header was invalid. Valid charset names are: utf-8 iso-8859-1.
• invalid_form_data - The method was called via a POST request with Content-Type application/x-www-form-urlencoded or multipart/form-data, but the form data was either missing or syntactically invalid.
• invalid_post_type - The method was called via a POST request, but the specified Content-Type was invalid. Valid types are: application/json application/x-www-form-urlencoded multipart/form-data text/plain.
• is_archived - Channel has been archived.
• is_bot - This method cannot be called by a bot user.
• method_deprecated - The method has been deprecated.
• method_not_supported_for_channel_type - This type of conversation cannot be used with this method.
• missing_post_type - The method was called via a POST request and included a data payload, but the request did not include a Content-Type header.
• missing_scope - The token used is not granted the specific scope permissions required to complete this request.
• no_permission - The workspace token used in this request does not have the permissions necessary to complete the request. Make sure your app is a member of the conversation it's attempting to post a message to.
• not_allowed_token_type - The token type used in this request is not allowed.
• not_authed - No authentication token provided.
• org_login_required - The workspace is undergoing an enterprise migration and will not be available until migration is complete.
• ratelimited - The request has been ratelimited. Refer to the Retry-After header for when to retry the request.
• request_timeout - The method was called via a POST request, but the POST data was either missing or truncated.
• service_unavailable - The service is temporarily unavailable
• team_added_to_org - The workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.
• token_revoked - Authentication token is for a deleted user or workspace or the app has been removed.
• too_many_members - The membership in the channel has exceeded our maximum member limit. No more users can join the channel.
• user_is_restricted - This method cannot be called by a restricted user or single channel guest.