diff --git a/xos/models/mcord.xproto b/xos/models/mcord.xproto
index b64aa65..bbbc84e 100644
--- a/xos/models/mcord.xproto
+++ b/xos/models/mcord.xproto
@@ -1,5 +1,6 @@
 option app_label = "mcord";
 option name = "mcord";
+option legacy = "True";
 
 message MCordSubscriberService (Service) {
      option verbose_name = "MCORD Service";
@@ -7,9 +8,10 @@
 }
 
 message MCordSubscriberInstance (ServiceInstance) {
-     option verbose_name = "MCORD Subscriber";
-     option description = "This model holds the informations of a Mobile Subscriber in CORD";
+    option verbose_name = "MCORD Subscriber";
+    option description = "This model holds the informations of a Mobile Subscriber in CORD";
 
-     required string imsi_number = 1 [max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
-     required string apn_number = 1 [max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
+    required string imsi_number = 1 [max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
+    optional string apn_number = 2 [max_length = 30, content_type = "stripped", blank = True, null = True, db_index = False];
+    optional int32 ue_status = 3 [max_length = 30, choices = "(('0', 'Detached'), ('1', 'Attached'))", blank = True, null = True, db_index = False];
 }