What is wrong in this code

Question

What is wrong in this code, my manager asking what if function failed. what I have missed here.its in vb.net. :(

 

Private Function IsListedUser() As Boolean

If Not String.IsNullOrEmpty(MyNeo.SessionData.Accessor.CurrentAccountDID) Then

If (Not String.IsNullOrEmpty(MyNeo.SessionData.CBSessionUser.UserDID) AndAlso SettingControl.GetString("sUserDIDPreferenceUsers").Contains(MyNeo.SessionData.CBSessionUser.UserDID)) OrElse _

(SettingControl.GetBoolean("bHideWhiteListedUserWS", False) AndAlso IsAccountWhiteListed(MyNeo.SessionData.Accessor.CurrentAccountDID)) Then

Return True

End If

End If

End Function