br-iosb

The warning mentioned by @NunoSav seems to be a .net core + docker specific issue. You might try this workaround: https://stackoverflow.com/questions/59657499/unable-to-bind-to-http-localhost5000-on-the-ipv6-loopback-interface-cannot

It seems that dataObjectType is unspecified and that key should not serialize as in your example. JSON de/serialization seems out of sync with spec and should be fixed.

The problem could arise when parsing the NodeId csv. To my knowledge, in I4AAS there are some names which differ only case-sensitively and open62541 reads these in upper-case, which leads...