diff --git a/EnvelopeGenerator.Application/Common/EnvelopeFlag.cs b/EnvelopeGenerator.Application/Common/EnvelopeFlag.cs
new file mode 100644
index 00000000..d9a26b38
--- /dev/null
+++ b/EnvelopeGenerator.Application/Common/EnvelopeFlag.cs
@@ -0,0 +1,27 @@
+namespace EnvelopeGenerator.Application.Common;
+
+/// <summary>
+/// 
+/// </summary>
+public enum EnvelopeFlag
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    EnvelopeOrReceiverNonexists,
+
+    /// <summary>
+    /// 
+    /// </summary>
+    NonDecodableEnvelopeReceiverId,
+
+    /// <summary>
+    /// 
+    /// </summary>
+    WrongEnvelopeReceiverId,
+
+    /// <summary>
+    /// 
+    /// </summary>
+    AccessCodeNull
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Application/EnvelopeFlag.cs b/EnvelopeGenerator.Application/EnvelopeFlag.cs
deleted file mode 100644
index e8d6350c..00000000
--- a/EnvelopeGenerator.Application/EnvelopeFlag.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace EnvelopeGenerator.Application
-{
-    public enum EnvelopeFlag
-    {
-        EnvelopeOrReceiverNonexists,
-        NonDecodableEnvelopeReceiverId,
-        WrongEnvelopeReceiverId,
-        AccessCodeNull
-    }
-}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Application/Services/EnvelopeReceiverService.cs b/EnvelopeGenerator.Application/Services/EnvelopeReceiverService.cs
index 3f33b32f..579c13e3 100644
--- a/EnvelopeGenerator.Application/Services/EnvelopeReceiverService.cs
+++ b/EnvelopeGenerator.Application/Services/EnvelopeReceiverService.cs
@@ -13,6 +13,7 @@ using EnvelopeGenerator.Application.Receivers.Queries;
 using EnvelopeGenerator.Domain.Constants;
 using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
 using EnvelopeGenerator.Application.Common.Dto.Messaging;
+using EnvelopeGenerator.Application.Common;
 
 namespace EnvelopeGenerator.Application.Services;