VoltageLevel.Substation cannot be resolved
From the CIM++ docs it seems that VoltageLevel does not have a pointer to Substation but vice versa https://cim.fein-aachen.org/libcimpp/doc/IEC61970_16v29a/classIEC61970_1_1Base_1_1Core_1_1VoltageLevel.html
This could be the reason why a CIM files like the following cannot be resolved correctly
<cim:VoltageLevel rdf:ID="_1d86b5e7-ff8b-4475-a314-50001d6a4319">
<cim:IdentifiedObject.name>7081</cim:IdentifiedObject.name>
<cim:VoltageLevel.Substation rdf:resource="#_3FA2-2E-F1-00000000000037303831"/>
<cim:VoltageLevel.BaseVoltage rdf:resource="#_93a918b5-2b10-4473-be04-aae01d5cec31"/>
</cim:VoltageLevel>
Edited by Markus Mirz