As of the UA Specification 1.05.03 it is required to use the new statuscode Bad_NoValue for Variables which have no value (see issue 0008757). This effects a lot of namespace 0 nodes, e.g. most of the Variables below BaseObjectType or Variables below the Server Object which are not used by the server.

So 'Base Information/Base Info Core Structure/001' fails with errors like this:
Read.Response.Results (count: 2) with RequestHandle=1321 StatusCodes check:
[0] (Request.NodesToRead[0].NodeId: 'i=11193') StatusCode is Unknown Error Code 0x80f00000,
[1] (Request.NodesToRead[1].NodeId: 'i=11193') StatusCode is Good (0x00000000)

Furthermore every beforeTest, afterTest and initialize fails when reading the server capabilities with such errors:
Read.Response.Results[8] received 'Unknown Error Code 0x80f00000, but Expected: Good (0x00000000) or BadNodeIdUnknown (0x80340000),
when reading NodeId: i=3704 (Value)

There may be more errors related to this issue, but literally every testcase is failing, so the CTT is completely unusable.