diff --git a/WorkFlow.Domain/Entities/Config.cs b/WorkFlow.Domain/Entities/Config.cs
index 4ddeff4..ae6115c 100644
--- a/WorkFlow.Domain/Entities/Config.cs
+++ b/WorkFlow.Domain/Entities/Config.cs
@@ -1,10 +1,11 @@
-using System.ComponentModel.DataAnnotations;
+using DigitalData.Core.Abstractions;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace WorkFlow.Domain.Entities
 {
     [Table("TBMWF_CONFIG", Schema = "dbo")]
-    public class Config
+    public class Config : IUnique<int>
     {
         [Key]
         [Column("GUID")]
diff --git a/WorkFlow.Domain/Entities/ProfControlsTf.cs b/WorkFlow.Domain/Entities/ProfControlsTf.cs
index ff4d51d..6a746c2 100644
--- a/WorkFlow.Domain/Entities/ProfControlsTf.cs
+++ b/WorkFlow.Domain/Entities/ProfControlsTf.cs
@@ -1,11 +1,12 @@
-using DigitalData.UserManager.Domain.Entities;
+using DigitalData.Core.Abstractions;
+using DigitalData.UserManager.Domain.Entities;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace WorkFlow.Domain.Entities
 {
     [Table("TBMWF_PROF_CONTROLS_TF", Schema = "dbo")]
-    public class ProfControlsTf
+    public class ProfControlsTf : IUnique<int>
     {
         [Key]
         [Column("GUID")]
diff --git a/WorkFlow.Domain/Entities/Profile.cs b/WorkFlow.Domain/Entities/Profile.cs
index feac0f7..b3deb49 100644
--- a/WorkFlow.Domain/Entities/Profile.cs
+++ b/WorkFlow.Domain/Entities/Profile.cs
@@ -1,10 +1,11 @@
-using System.ComponentModel.DataAnnotations;
+using DigitalData.Core.Abstractions;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace WorkFlow.Domain.Entities
 {
     [Table("TBMWF_PROFILE", Schema = "dbo")]
-    public class Profile
+    public class Profile : IUnique<int>
     {
         [Key]
         [Column("GUID")]
diff --git a/WorkFlow.Domain/Entities/ProfileObjState.cs b/WorkFlow.Domain/Entities/ProfileObjState.cs
index 567f0df..10c2cd5 100644
--- a/WorkFlow.Domain/Entities/ProfileObjState.cs
+++ b/WorkFlow.Domain/Entities/ProfileObjState.cs
@@ -1,10 +1,11 @@
-using System.ComponentModel.DataAnnotations;
+using DigitalData.Core.Abstractions;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace WorkFlow.Domain.Entities
 {
     [Table("TBMWF_PROFILE_OBJ_STATE", Schema = "dbo")]
-    public class ProfileObjState
+    public class ProfileObjState : IUnique<int>
     {
         [Key]
         [Column("GUID")]
diff --git a/WorkFlow.Domain/Entities/WfState.cs b/WorkFlow.Domain/Entities/WfState.cs
index fbafd10..bb0ac71 100644
--- a/WorkFlow.Domain/Entities/WfState.cs
+++ b/WorkFlow.Domain/Entities/WfState.cs
@@ -1,10 +1,11 @@
-using System.ComponentModel.DataAnnotations;
+using DigitalData.Core.Abstractions;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace WorkFlow.Domain.Entities
 {
     [Table("TBMWF_WF_STATE", Schema = "dbo")]
-    public class WfState
+    public class WfState : IUnique<int>
     {
         [Key]
         [Column("GUID")]