This indicates that somehow the CMIP component received a message that contained a Association or Session handle which was not a valid value. In most cases this indicates an aborted session, but application program s are allowed to specify the Association/Session to use for routing the message. This error might be reported because an invalid value was specified by the application. It is rare that this error is caught in the CMIP component because the messages pass through other components which validate these fields before it gets to the CMIP component.