diff --git a/EnvelopeGenerator.Domain/Constants/AuthPolicy.cs b/EnvelopeGenerator.Domain/Constants/AuthPolicy.cs
index 17e709a3..b5a85943 100644
--- a/EnvelopeGenerator.Domain/Constants/AuthPolicy.cs
+++ b/EnvelopeGenerator.Domain/Constants/AuthPolicy.cs
@@ -4,6 +4,8 @@ namespace EnvelopeGenerator.Domain.Constants
     {
         public const string SenderOrReceiver = nameof(SenderOrReceiver) + nameof(AuthPolicy);
 
+        public const string ReceiverOrReceiverTFA = nameof(ReceiverOrReceiverTFA) + nameof(AuthPolicy);
+
         public const string Sender = nameof(Sender) + nameof(AuthPolicy);
 
         public const string Receiver = nameof(Receiver) + nameof(AuthPolicy);