Reference
EVENT_PLAN_EXISTS
Event already has an event plan
Event already has an event plan
HTTP status 409 Conflict, code EVENT_PLAN_EXISTS.
What it means#
An event has one event plan, and this event has one.
What to do#
Read and change the existing event plan.
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.