seems to be impossible to use the "exempt" tax

[madskaddie]

The exempt tax belongs to the Portugal context, but the validation done verifies if the tax context is a subcontext of the given context. Being on the toplevel, the "PortugalContext".getParent() allways evaluates to null and thus "false" is allways returned from the daoContext.isSubContext() method.

Is any other way to use the exempt tax ?