Reference
EVENT_ALREADY_LISTED
Event already listed on this channel
Event already listed on this channel
HTTP status 409 Conflict, code EVENT_ALREADY_LISTED.
What it means#
A listing for this event already exists on the channel. An event is listed on a channel at most once.
What to do#
Update the existing listing rather than creating another.
On the wire#
Every error response carrying this code names this page in error.moreInfo,
with the request id in the query string. See Error codes for
the response shape and the list of every code.