SHOULD be returned when a channel cannot be created or retrieved via the getOrCreateChannel method of the DesktopAgent (fdc3).
Returned if a call to the broadcast functions is made with an invalid context argument. Contexts should be Objects with at least a type field that has a string value.
Returned if the specified channel is not found when attempting to join a channel via the joinUserChannel function of the DesktopAgent (fdc3).
SHOULD be returned when a request to join a user channel or to a retrieve a Channel object via the
joinUserChannelorgetOrCreateChannelmethods of the DesktopAgent (fdc3) object is denied.