diff --git a/backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/ScriptOperations.cs b/backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/ScriptOperations.cs
index 82436cf29..740f92b2d 100644
--- a/backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/ScriptOperations.cs
+++ b/backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/ScriptOperations.cs
@@ -1,4 +1,4 @@
-// ==========================================================================
+// ==========================================================================
 //  Squidex Headless CMS
 // ==========================================================================
 //  Copyright (c) Squidex UG (haftungsbeschraenkt)
@@ -6,6 +6,7 @@
 // ==========================================================================
 
 using Jint;
+using Jint.Native;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Translations;
 using Squidex.Infrastructure.Validation;
@@ -16,18 +17,50 @@ internal static class ScriptOperations
 {
     private delegate void MessageDelegate(string? message);
 
-    private static readonly MessageDelegate Disallow = message =>
+    private delegate void MessageJsonDelegate(string? message);
+
+    private static readonly Action<string> Disallow = message =>
     {
         message = !string.IsNullOrWhiteSpace(message) ? message : T.Get("common.jsNotAllowed");
 
         throw new DomainForbiddenException(message);
     };
 
-    private static readonly MessageDelegate Reject = message =>
+    private static readonly Action<JsValue> Reject = message =>
     {
-        message = !string.IsNullOrWhiteSpace(message) ? message : T.Get("common.jsRejected");
+        var errors = new List<ValidationError>();
+
+        void AddError(JsString message)
+        {
+            var text = message.ToString();
+
+            if (!string.IsNullOrWhiteSpace(text))
+            {
+                errors.Add(new ValidationError(text));
+            }
+        }
+
+        if (message is JsString typed)
+        {
+            AddError(typed);
+        }
+        else if (message is JsArray jsArray)
+        {
+            foreach (var item in jsArray)
+            {
+                if (item is JsString typedItem)
+                {
+                    AddError(typedItem);
+                }
+            }
+        }
+
+        if (errors.Count == 0)
+        {
+            errors.Add(new ValidationError(T.Get("common.jsRejected")));
+        }
 
-        throw new ValidationException(message);
+        throw new ValidationException(errors);
     };
 
     public static Engine AddDisallow(this Engine engine)
diff --git a/backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JintScriptEngineHelperTests.cs b/backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JintScriptEngineHelperTests.cs
index 7e0711537..9725103a6 100644
--- a/backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JintScriptEngineHelperTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JintScriptEngineHelperTests.cs
@@ -279,12 +279,33 @@ public class JintScriptEngineHelperTests : IClassFixture<TranslationsFixture>
         };
 
         const string script = @"
-                reject('Not valid')
+                reject('Error1')
             ";
 
         var ex = await Assert.ThrowsAsync<ValidationException>(() => sut.ExecuteAsync(vars, script, options));
 
-        Assert.Equal("Not valid", ex.Errors.Single().Message);
+        Assert.Equal(new[] { "Error1" }, ex.Errors.Select(x => x.Message).ToArray());
+    }
+
+    [Fact]
+    public async Task Should_throw_validation_exception_if_calling_reject_with_messages()
+    {
+        var options = new ScriptOptions
+        {
+            CanReject = true
+        };
+
+        var vars = new ScriptVars
+        {
+        };
+
+        const string script = @"
+                reject(['Error1', 'Error2'])
+            ";
+
+        var ex = await Assert.ThrowsAsync<ValidationException>(() => sut.ExecuteAsync(vars, script, options));
+
+        Assert.Equal(new[] { "Error1", "Error2" }, ex.Errors.Select(x => x.Message).ToArray());
     }
 
     [Fact]