diff --git a/source/DocumentValidation/DocumentValidation.csproj b/source/DocumentValidation/DocumentValidation.csproj
index 383c6c06f5..4fecdcd752 100644
--- a/source/DocumentValidation/DocumentValidation.csproj
+++ b/source/DocumentValidation/DocumentValidation.csproj
@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="JsonSchema.Net" Version="3.3.2" />
+      <PackageReference Include="JsonSchema.Net" Version="4.0.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/source/Infrastructure/IncomingMessages/RequestChangeOfSupplier/JsonMessageParser.cs b/source/Infrastructure/IncomingMessages/RequestChangeOfSupplier/JsonMessageParser.cs
index 2b6b27d14f..9e97b99179 100644
--- a/source/Infrastructure/IncomingMessages/RequestChangeOfSupplier/JsonMessageParser.cs
+++ b/source/Infrastructure/IncomingMessages/RequestChangeOfSupplier/JsonMessageParser.cs
@@ -185,35 +185,39 @@ private static string GetJsonDateStringWithoutQuotes(JToken token)
         return token.ToString(Formatting.None).Trim('"');
     }
 
+    private static bool IsValid(JsonDocument document, JsonSchema schema)
+    {
+        return schema.Evaluate(document, new EvaluationOptions() { OutputFormat = OutputFormat.Flag, }).IsValid;
+    }
+
     private async Task ValidateMessageAsync(JsonSchema schema, Stream message)
     {
         var jsonDocument = await JsonDocument.ParseAsync(message).ConfigureAwait(false);
 
-        var validationOptions = new ValidationOptions()
+        if (IsValid(jsonDocument, schema) == false)
         {
-            OutputFormat = OutputFormat.Detailed,
-        };
-
-        var validationResult = schema.Validate(jsonDocument, validationOptions);
-
-        if (!validationResult.IsValid)
-        {
-            AddValidationErrors(validationResult);
+            ExtractValidationErrors(jsonDocument, schema);
         }
 
         ResetMessagePosition(message);
     }
 
-    private void AddValidationErrors(ValidationResults validationResult)
+    private void ExtractValidationErrors(JsonDocument jsonDocument, JsonSchema schema)
     {
-        AddValidationError(validationResult.Message);
+        var result = schema.Evaluate(jsonDocument, new EvaluationOptions() { OutputFormat = OutputFormat.List, });
+        result
+            .Details
+            .Where(detail => detail.HasErrors)
+            .ToList().ForEach(AddValidationErrors);
+    }
 
-        if (validationResult.HasNestedResults)
+    private void AddValidationErrors(EvaluationResults validationResult)
+    {
+        var propertyName = validationResult.InstanceLocation.ToString();
+        var errorsValues = validationResult.Errors ?? new Dictionary<string, string>();
+        foreach (var error in errorsValues)
         {
-            foreach (var result in validationResult.NestedResults)
-            {
-                AddValidationError(result.Message);
-            }
+            AddValidationError($"{propertyName}: {error}");
         }
     }
 
diff --git a/source/Tests/Infrastructure/OutgoingMessages/Asserts/AssertJsonMessage.cs b/source/Tests/Infrastructure/OutgoingMessages/Asserts/AssertJsonMessage.cs
index 0db82a9923..77cbfcee51 100644
--- a/source/Tests/Infrastructure/OutgoingMessages/Asserts/AssertJsonMessage.cs
+++ b/source/Tests/Infrastructure/OutgoingMessages/Asserts/AssertJsonMessage.cs
@@ -29,12 +29,12 @@ public static void AssertConformsToSchema(JsonDocument document, JsonSchema sche
     {
         if (schema == null) throw new InvalidOperationException($"Schema not found for business process type {documentType}");
 
-        var validationOptions = new ValidationOptions()
+        var validationOptions = new EvaluationOptions()
         {
-            OutputFormat = OutputFormat.Detailed,
+            OutputFormat = OutputFormat.List,
         };
 
-        var validationResult = schema.Validate(document, validationOptions);
+        var validationResult = schema.Evaluate(document, validationOptions);
 
         Assert.True(validationResult.IsValid);
     }