It's not possible to refer to an external nodes in informationRequirement and knowledgeRequirement

[yesamer]

Using informationRequirement and knowledgeRequirement can refer to internal and external nodes using the href attribute.
Please notice the case of internal nodes above:

        <informationRequirement>
            <requiredDecision href="_decision_001"/>
        </informationRequirement>
        <informationRequirement>
            <requiredInput href="_input_001"/>
        </informationRequirement>
        <knowledgeRequirement>
            <requiredKnowledge href="_bkm_001"/>
        </knowledgeRequirement>

This case is currently working as expected.

The spec 12.3.2 References within the DMN XSD states that is it possible to refer to external nodes using the following syntax:

        <informationRequirement>
            <requiredDecision href="http://www.montera.com.au/spec/DMN/0091-local-hrefs#_decision_001"/>
        </informationRequirement>
        <informationRequirement>
            <requiredInput href="http://www.montera.com.au/spec/DMN/0091-local-hrefs#_input_001"/>
        </informationRequirement>
        <knowledgeRequirement>
            <requiredKnowledge href="http://www.montera.com.au/spec/DMN/0091-local-hrefs#_bkm_001"/>
        </knowledgeRequirement>

This case is currently NOT working

[gitgabrio]

@yesamer
IIUC, this is the test/model you are referring to, but the namespace in the href attribute
href="http://www.montera.com.au/spec/DMN/0091-local-hrefs#_decision_001"
is the namespace of the model itself

<definitions namespace="http://www.montera.com.au/spec/DMN/0091-local-hrefs"
so it is not a reference to an external node
(pls notice there are some tests/examples using such elements from external nodes, e.g. this)

[yesamer]

@gitgabrio Yes, that particular case refers to the same document. BUT, according to the specs ^^ (12.3.2 References within the DMN XSD) it should work with external nodes too. Is it correct or did I misunderstand the specs?

[yesamer]

@gitgabrio So that means it's not working in the case the namespace points to itself, is that right?

[gitgabrio]

@yesamer
When the engine find that syntax
http://www.montera.com.au/spec/DMN/0091-local-hrefs#_decision_001
it tries to resolve the node looking in the imports with the http://www.montera.com.au/spec/DMN/0091-local-hrefs namespace.
But since there are not such imports, it fails.

Yes, that particular case refers to the same document. BUT, according to the specs ^^ (12.3.2 References within the DMN XSD) it should work with external nodes too. Is it correct or did I misunderstand the specs?
yup, and it actually works with real external nodes (e.g. this)

So that means it's not working in the case the namespace points to itself, is that right?
Yup. IIUC the specs, the test is wrong, because the specs refer to external nodes, and this is not the case.