Mr. Grun,

I tested the latest BaseX 11.0 beta build 9182be0.

It emits the following result for the provided test case:

<report>
  <status>valid</status>
  <message level="WARNING" line="12" column="40"
url="file:/C:/Users/i300179/Downloads/Warning.xsd">FacetsContradict: For
simpleType definition '#AnonType_ADDR_TYPE', the enumeration value ''
contradicts with value of 'length' facet.</message>
</report>

We are almost there. There is one more wrinkle to smooth out.
Messages' level attribute value became UPPER-CASED:
level="ERROR"
level="WARNING"

That level attribute values shall be kept as before:
level="Error"
level="Warning"

Otherwise, it breaks existing XQuery analysis of the XSD validation.

Regards,
Yitzhak Khabinsky