Reference
PROPOSAL_NOT_FOUND
Proposal not found
Proposal not found
HTTP status 404 Not Found, code PROPOSAL_NOT_FOUND.
What it means#
No proposal with that id exists in this turn's organisation, channel and conversation. A proposal from another conversation is not found, whether or not it exists.
What to do#
Confirm the proposal from the card the engine returned in this conversation.
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.