The customer was trying to run adhoc alarm reports on interfaces and in the device alarm attributes there is an attribute called User_Asset Tag but in the interface alarm attributes the attribute doesn't exist.
This is functioning as designed.
Release : 10.3
Component : Spectrum Core / SpectroSERVER
The user_AssetTag attribute is only available on the device alarm information and it is not available on the interfaces alarm information list. This is functioning as designed.