diff --git a/server/src/CPATapi.Server/Models/TapiContact.cs b/server/src/CPATapi.Server/Models/TapiContact.cs
index 50dd0c3..7ac64a2 100644
--- a/server/src/CPATapi.Server/Models/TapiContact.cs
+++ b/server/src/CPATapi.Server/Models/TapiContact.cs
@@ -2,9 +2,9 @@ namespace CPATapi.Server.Models;
 
 public class TapiContact
 {
-    public string TD_ID { get; set; }
-    public string TD_NAME { get; set; }
-    public string TD_NUMBER { get; set; }
-    public string TD_NUMBER_TAPI { get; set; }
-    public string TD_MEDIUM { get; set; }
+    public required string TD_ID { get; set; }
+    public required string TD_NAME { get; set; }
+    public required string TD_NUMBER { get; set; }
+    public required string TD_NUMBER_TAPI { get; set; }
+    public required string TD_MEDIUM { get; set; }
 }
\ No newline at end of file