diff --git a/src/ReC.Application/Results/Commands/InsertResultCommand.cs b/src/ReC.Application/Results/Commands/InsertResultCommand.cs
index 48d9fef..0fcc838 100644
--- a/src/ReC.Application/Results/Commands/InsertResultCommand.cs
+++ b/src/ReC.Application/Results/Commands/InsertResultCommand.cs
@@ -15,7 +15,7 @@ public record InsertResultCommand : IInsertProcedure
     public string? InfoDetail { get; set; }
     public string? Error { get; set; }
     public required ResultType Type { get; set; }
-    public InvokeReferences? References { get; set; }
+    public required InvokeReferences References { get; set; }
 }
 
 public class InsertResultProcedureHandler(ISender sender) : IRequestHandler<InsertResultCommand, long>