On 5 janv. 2012, at 12:56, Cemo wrote:

1. I am not sure whether I file another issue or not but if there is an opportunity I would like set error message via violating constraint. :) 

@ReportAsSingleViolation(shortCircuit=true, messageSource=ByOriginatingConstraint) 

Yes please open a dedicated BVAL issue. Even better contribute the spec and API change :) 

Make sure to describe the use case as well in the issue.