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02/07/2025
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Dear OPC community,
we are currently implementing the functionality to add, edit and remove nodes at runtime for our server. The documentation is very helpful in understanding what needs to happen. However I would like to verify that we understood it correctly/fill in the gaps. So please let me know if I got anything wrong:
1) The server is started and loads its current model.
2) Server state goes to running.
3) Client now connects as the server is “ready”.
4) The server updates (adds, edits, deletes) nodes and sends BaseModelChangeEvent/GeneralModelChangeEvent
5) The server state remains running for the changes (?)
6) The client is subscribed (or not) to the above events and can issue a reconnect or re-read.
I am wondering about the server state when modifying nodes and about the client’s possibilities to detect changes.
Many thanks in advance! 
05/30/2017
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The server state is not related to changing the address space.
lots of servers add/remove nodes in the running state because they front end a dynamic system.
if your server needs to functionality while you are adding/removing nodes then you would choose a non-running state.
if clients are not limited use running.
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