Learning Portal LSO CW31/2016
The development team has recently release an not in the area of Learning Portal that solves an issue where error message returned from BAdi during the cancellation was not considered by the system.
The reason for such system behavior was that the message was not handled for displaying while processing cancellation.
In order to solve the issue please apply correction instructions attached to the note 2343389 or apply corresponding Support Package.
TEM and LSO Support