Orion does not support polling duplicate IP adresses. The only way you can have several nodes in Orion with the same IP is if you poll using an Agent instead.
The first question is: do you want to keep the existing node?
If you don't need to keep the existing node, you can delete it:
Then, you should be able to add the new node.
yes I want to keep the node .. the same ip has several servers that I would like to monitor put even changing the SNMP community (community different for each server) it will not let me adiconar a node of the same ip
Could you clarify please - do you mean there are several virtual servers hosted on one physical server (say, several web servers)? Or do you mean there are several services or processes running on one host, and you would like to monitor each service or processes?