edsvaSecondaryOwner Details

Hello All,

This maybe a dumb question, but I was curious if anybody can shed some light on the "edsvaSecondaryOwner" attribute. I see from the naming convention that it is a virtual attribute in the ARS schema, however when I pull up a list of Virtual Attributes in the ARS console (Configuration | Server Configuration | Virtual Attributes), it is not there. Any information on where this is stored in ARS, or if there are other "canned" virtual attributes that are not listed under Server Configuration that I should be aware of.  (I am trying to learn all I can about ARS, and this caught my eye.)

Thank you kindly.