How comfortable are you with cmdbdriver?
If you are able to access the command line of the server, initialise cmdbdriver and use the ca (create attribute) command then the results may help you
If the attribute is successfully created then you need to investigate why you can't create it using the class manager module (Java API) and flex logging may reveal more (there should be a KA for that).
If the attribute is not created then the error message written at the end of using a cmdbdriver command is sometimes more meaningful than you would see when using class manager, and if that error helps you resolve the issue then you may be able to return to using the class manager later on.
do you need to set a server port (ssp)?
It looks like you need to resolve your localhost, IP Address, short name of the Remedy AR Server in host file of Remedy Server.
Thanks Nick. I am able to create attribute without the server port .
Appreciate your help