diff --git a/IRaCIS.Core.Application/Service/WorkLoad/_MapConfig.cs b/IRaCIS.Core.Application/Service/WorkLoad/_MapConfig.cs
index a590b98b4..fa1cbefe3 100644
--- a/IRaCIS.Core.Application/Service/WorkLoad/_MapConfig.cs
+++ b/IRaCIS.Core.Application/Service/WorkLoad/_MapConfig.cs
@@ -18,7 +18,8 @@ namespace IRaCIS.Core.Application.Service
 
             CreateMap<SetCriterionJoinJoinAnalysisCommand, EnrollReadingCriterion>().ReverseMap();
 
-            CreateMap<TestModel, TestModel2>();
+            CreateMap<TestModel, TestModel2>()
+                 .ForAllMembers(opts => opts.Condition((src, dest, srcMember) => srcMember != null));
             
 
         }
diff --git a/IRaCIS.Core.Domain/IRaCIS.Core.Domain.csproj b/IRaCIS.Core.Domain/IRaCIS.Core.Domain.csproj
index 555fa1854..8f65510a5 100644
--- a/IRaCIS.Core.Domain/IRaCIS.Core.Domain.csproj
+++ b/IRaCIS.Core.Domain/IRaCIS.Core.Domain.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
-	<!--<PropertyGroup>
+	<PropertyGroup>
 		<Nullable>enable</Nullable>
-	</PropertyGroup>-->
+	</PropertyGroup>
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>