derivation-ok-restriction.2.1.2: Error for type 'aa....aa'. The attribute use 'bb....bb' in this type has type 'cc....cc', which is not validly derived from 'dd....dd', the type of the matching attribute use in the base type.

This is an error for type aa....aa. The attribute usage bb....bb in this type has the type cc....cc. This type is not validly derived from type dd....dd of the matching attribute usage in the base type.