You can only use the RCDC "UniquenessValidationXPath" property to check for uniqueness in FIM (at least in this version) on a single attribute, e.g. <my:Property my:Name=”UniquenessValidationXPath” my:Value=”/Person[LastName='%VALUE%' and not(ObjectID='%ObjectID%')]” /> ... since %VALUE% can only ever reference the current binding context (see Blain's blog). What you would want is something like this: <my:Property my:Name=”UniquenessValidationXPath” my:Value=”/Person[LastName='%LastName_VALUE%' and FirstName='%FirstName_VALUE%' and not(ObjectID='%ObjectID%')]” /> ... but I don't believe that this is possible yet. So I think you'll find that this means you would need to write yourself a custom activity for an AuthZ workflow to check for uniqueness and throw an exception if it returns a match.Bob Bradley (FIMBob @ http://thefimteam.com/) ... now using Event Broker 3.0 @ http://www.unifysolutions.net/ourSolutions.cfm?solution=event for just-in-time delivery of FIM 2010 policy via the sync engine

I think Bob is right. Maybe you need to writen a custom activity. Depending on the case, you might also be able to validate Display Name.

yes it's something like this , but it's doesn't work :( thx for replying

hi , i want to check the uniqueness values of the combination LastName and Firstname in the RCDC ? thx