server/AyaNova/PickList/PickListParams.cs

@@ -31,6 +31,15 @@ namespace AyaNova.PickList
 
         [FromBody]
         public string ListVariant { get; set; }
+
+        public PickListParams()
+        {
+            AyaType = AyaType.NoType;
+            Query = string.Empty;
+            Inactive = false;
+            PreselectedIds = new List<long>();
+            ListVariant = string.Empty;
+        }
     }
 
 }