Communication between Servers

[francescobianca]

Hi,

I have a set of hierarchical Servers (the lower level one is a subset of the semantic model of the upper one and so on).
I also have REST APIs that modify the semantic model (add nodes for example). Is there any method with OPCUA to notify the lower servers of the change (For example if I add a node on the main OPCUA Server I would like this to be notified to the lower levels and eventually add the node to the lower levels)?

I read this part of the documentation:
https://reference.opcfoundation.org/Core/docs/Part1/6.3.7/

Thanks in advance

[AndreasHeine]

The lower servers need to subscribe to the "ModelChangeEvents" (which the upper server has to emit!) and then you need to implement what the lower server should do!

https://reference.opcfoundation.org/v104/Core/docs/Part3/9.32.7/