diff --git a/EnvelopeGenerator.ServiceHost/EnvelopeGenerator.ServiceHost.csproj b/EnvelopeGenerator.ServiceHost/EnvelopeGenerator.ServiceHost.csproj
index 0c56541f..b16aff60 100644
--- a/EnvelopeGenerator.ServiceHost/EnvelopeGenerator.ServiceHost.csproj
+++ b/EnvelopeGenerator.ServiceHost/EnvelopeGenerator.ServiceHost.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
@@ -12,6 +12,7 @@
 
   <ItemGroup>
     <Folder Include="Controllers\" />
+    <Folder Include="Extensions\" />
   </ItemGroup>
 
 </Project>
diff --git a/EnvelopeGenerator.ServiceHost/Exceptions/BurnAnnotationException.cs b/EnvelopeGenerator.ServiceHost/Exceptions/BurnAnnotationException.cs
new file mode 100644
index 00000000..ea02f9f0
--- /dev/null
+++ b/EnvelopeGenerator.ServiceHost/Exceptions/BurnAnnotationException.cs
@@ -0,0 +1,12 @@
+namespace EnvelopeGenerator.ServiceHost.Exceptions;
+
+public class BurnAnnotationException : ApplicationException
+{
+    public BurnAnnotationException(string message) : base(message)
+    {
+    }
+
+    public BurnAnnotationException(string message, Exception innerException) : base(message, innerException)
+    {
+    }
+}
diff --git a/EnvelopeGenerator.ServiceHost/Exceptions/CreateReportException.cs b/EnvelopeGenerator.ServiceHost/Exceptions/CreateReportException.cs
new file mode 100644
index 00000000..20ea8bdc
--- /dev/null
+++ b/EnvelopeGenerator.ServiceHost/Exceptions/CreateReportException.cs
@@ -0,0 +1,12 @@
+namespace EnvelopeGenerator.ServiceHost.Exceptions;
+
+public class CreateReportException : ApplicationException
+{
+    public CreateReportException(string message) : base(message)
+    {
+    }
+
+    public CreateReportException(string message, Exception innerException) : base(message, innerException)
+    {
+    }
+}
diff --git a/EnvelopeGenerator.ServiceHost/Exceptions/ExportDocumentException.cs b/EnvelopeGenerator.ServiceHost/Exceptions/ExportDocumentException.cs
new file mode 100644
index 00000000..22b22e1f
--- /dev/null
+++ b/EnvelopeGenerator.ServiceHost/Exceptions/ExportDocumentException.cs
@@ -0,0 +1,12 @@
+namespace EnvelopeGenerator.ServiceHost.Exceptions;
+
+public class ExportDocumentException : ApplicationException
+{
+    public ExportDocumentException(string message) : base(message)
+    {
+    }
+
+    public ExportDocumentException(string message, Exception innerException) : base(message, innerException)
+    {
+    }
+}
diff --git a/EnvelopeGenerator.ServiceHost/Exceptions/MergeDocumentException.cs b/EnvelopeGenerator.ServiceHost/Exceptions/MergeDocumentException.cs
new file mode 100644
index 00000000..6371213b
--- /dev/null
+++ b/EnvelopeGenerator.ServiceHost/Exceptions/MergeDocumentException.cs
@@ -0,0 +1,12 @@
+namespace EnvelopeGenerator.ServiceHost.Exceptions;
+
+public class MergeDocumentException : ApplicationException
+{
+    public MergeDocumentException(string message) : base(message)
+    {
+    }
+
+    public MergeDocumentException(string message, Exception innerException) : base(message, innerException)
+    {
+    }
+}