cvc-complex-type.3.1: Value 'cc....cc' of attribute 'bb....bb' of element 'aa....aa' is not valid with respect to the corresponding attribute use. Attribute 'bb....bb' has a fixed value of 'dd....dd'.

The value cc....cc specified in the attribute bb....bb of the element aa....aa is invalid. The attribute bb....bb has a fixed value of dd....dd.