This is fixed in Spectrum hotfix 11 and above for 9.0
IPaddress attributes cannot be updated in Spectrum as it is disallowed due to a rule implemented in the server.
The update to attribute <attribute name> was disallowed due to a rule implemented in the server.
The update to attribute Primary Address was disallowed due to a rule implemented in the server.
swbug022731, swbug022924, swbug022929
Causes of this problem:
The reason the error shows is that when a user changes an IP address to another IP that already exists in the database, it becomes an address that is part of the Currently Shared IP Detection on the VNM model (Viewable in the Shared IP Detection and Alarming View on the VNM model). When the IP is moved to the Allowed Shared IP Address list, Spectrum would not actually share the IP and the error message is shown.
(Legacy KB ID CNC TS33825 )