SEBA-513 Cleanup errors reported by xproto validator

Change-Id: Ib985d3431492ff209e2b386cd098d41317c8624b
diff --git a/xos/synchronizer/models/rcord.xproto b/xos/synchronizer/models/rcord.xproto
index ba3168f..2ba15be 100644
--- a/xos/synchronizer/models/rcord.xproto
+++ b/xos/synchronizer/models/rcord.xproto
@@ -67,20 +67,14 @@
 
     required manytoone subscriber->RCORDSubscriber:ips = 1:1001 [
         help_text = "The subscriber the IP address belongs to",
-        blank = False,
-        db_index = True,
-        null = False];
+        db_index = True];
     required string ip = 2 [
         help_text = "The unique IP address (either IPv4 or IPv6 / netmask)",
-        blank = False,
         db_index = False,
         max_length = 52,
-        null = False,
         unique_with = "subscriber"];
     optional string description = 3 [
         help_text = "A short description of the IP address",
-        blank = False,
         db_index = False,
-        max_length = 254,
-        null = False];
-}
\ No newline at end of file
+        max_length = 254];
+}