Currently it's not specified whether it is required that validation (or metadata retrieval) of one method shall succeed, also if the hosting type contains other methods with illegal configurations.

The RI currently implements a fail-late approach, i.e. validation of correct methods suceeds in this case, only validation or metadata retrieval for the illegaly configured method fails. The exception is built up early and stored and will only be thrown in case the illegal method is validated or the user requests metadata for it.