Should XML name or label be unique?

[joint (Mike)]

Should XML name or label be unique?

Thanks

[Lucas_Givord]

Hello @joint

yes the proxy xml name is unique

[mwestphal (Mathieu Westphal (Kitware))]

But the label is not

[cory.quammen (Cory Quammen (Kitware))]

Labels should be unique because they are used in Python as the basis for identifiers.