diff --git a/src/Runner.Worker/ActionManifestManager.cs b/src/Runner.Worker/ActionManifestManager.cs
index 31ea708d8..b305ea619 100644
--- a/src/Runner.Worker/ActionManifestManager.cs
+++ b/src/Runner.Worker/ActionManifestManager.cs
@@ -141,7 +141,7 @@ namespace GitHub.Runner.Worker
                 foreach (var error in templateContext.Errors)
                 {
                     Trace.Error($"Action.yml load error: {error.Message}");
-                    executionContext.Error(error.Message);
+                    executionContext.Error("And let's duplicate errors: " + error.Message);
                 }
 
                 throw new ArgumentException($"Fail to load {fileRelativePath}");
diff --git a/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateEvaluator.cs b/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateEvaluator.cs
index 915fc3cbc..8c1c96491 100644
--- a/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateEvaluator.cs
+++ b/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateEvaluator.cs
@@ -287,7 +287,7 @@ namespace GitHub.DistributedTask.ObjectTemplating
                     {
                         if (!keys.Contains(property.Key))
                         {
-                            m_context.Error(mapping, $"Required property is missing: {property.Key}");
+                            m_context.Error(mapping,  "Template evaluator error " + $"Required property is missing: {property.Key}");
                         }
                     }
                 }
diff --git a/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateReader.cs b/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateReader.cs
index b4af6d2fb..840d2774c 100644
--- a/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateReader.cs
+++ b/src/Sdk/DTObjectTemplating/ObjectTemplating/TemplateReader.cs
@@ -279,7 +279,7 @@ namespace GitHub.DistributedTask.ObjectTemplating
                 nonDuplicates.Sort();
 
                 String listToDeDuplicate = String.Join(", ", nonDuplicates);
-                m_context.Error(mapping, TemplateStrings.UnableToDetermineOneOf(listToDeDuplicate));
+                m_context.Error(mapping, "Template reader error: " + TemplateStrings.UnableToDetermineOneOf(listToDeDuplicate));
             }
             else if (mappingDefinitions.Count == 1 && !hasExpressionKey)
             {
@@ -289,7 +289,7 @@ namespace GitHub.DistributedTask.ObjectTemplating
                     {
                         if (!keys.Contains(property.Key))
                         {
-                            m_context.Error(mapping, $"Required property is missing: {property.Key}");
+                            m_context.Error(mapping, "Template Reader error " + $"Required property is missing: {property.Key}");
                         }
                     }
                 }