Errors with GXL schema

I configured vscode-xml to use the GXL schema http://www.gupro.de/GXL/xmlschema/gxl-1.0.xsd for all .gxl files.

But when opening a GXL file, it gives a lot of errors:

And none of the code intelligence features work.

Here’s an example file: data_gxl_minimal++_minimal++_OHNE_DOC.gxl.zip

The schema is official so I would expect it to work (and assume it’s correct)

[NikolasKomonen]

After a quick look, in the XSD it uses xmlns:xsd="http://www.w3.org/2000/10/XMLSchema" instead of the regular xmlns:xsd="http://www.w3.org/2001/XMLSchema"

and from the errors it looks like it only works with the latter.

Not sure if xerces only supports the 2001 schema, need to investigate it.

[angelozerr]

I fear that issue cannot be resolved since this error comes from xerces here https://github.com/apache/xerces2-j/blob/trunk/src/org/apache/xerces/impl/xs/traversers/XSAttributeChecker.java#L988

if (!SchemaSymbols.URI_SCHEMAFORSCHEMA.equals(uri)) {
  reportSchemaError("s4s-elt-schema-ns", new Object[] {elName}, element);
}

As you can see the test with namespace uri is hard coded.