diff --git a/src/Squidex.Domain.Apps.Entities/Contents/ScheduleJob.cs b/src/Squidex.Domain.Apps.Entities/Contents/ScheduleJob.cs
index 9936e98ef..4145dd954 100644
--- a/src/Squidex.Domain.Apps.Entities/Contents/ScheduleJob.cs
+++ b/src/Squidex.Domain.Apps.Entities/Contents/ScheduleJob.cs
@@ -1,4 +1,5 @@
-// ==========================================================================
+
+// ==========================================================================
 //  Squidex Headless CMS
 // ==========================================================================
 //  Copyright (c) Squidex UG (haftungsbeschraenkt)
@@ -22,17 +23,17 @@ namespace Squidex.Domain.Apps.Entities.Contents
 
         public Instant DueTime { get; }
 
-        public ScheduleJob(Guid id, Status status, RefToken scheduledBy, Instant due)
+        public ScheduleJob(Guid id, Status status, RefToken scheduledBy, Instant dueTime)
         {
             Id = id;
             ScheduledBy = scheduledBy;
             Status = status;
-            DueTime = due;
+            DueTime = dueTime;
         }
 
-        public static ScheduleJob Build(Status status, RefToken by, Instant due)
+        public static ScheduleJob Build(Status status, RefToken scheduledBy, Instant dueTime)
         {
-            return new ScheduleJob(Guid.NewGuid(), status, by, due);
+            return new ScheduleJob(Guid.NewGuid(), status, scheduledBy, dueTime);
         }
     }
 }
diff --git a/src/Squidex/Areas/Api/Controllers/Contents/Models/ScheduleJobDto.cs b/src/Squidex/Areas/Api/Controllers/Contents/Models/ScheduleJobDto.cs
index b0e7b34cb..ef7ebda7b 100644
--- a/src/Squidex/Areas/Api/Controllers/Contents/Models/ScheduleJobDto.cs
+++ b/src/Squidex/Areas/Api/Controllers/Contents/Models/ScheduleJobDto.cs
@@ -6,6 +6,7 @@
 // ==========================================================================
 
 using System;
+using System.ComponentModel.DataAnnotations;
 using NodaTime;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Infrastructure;
@@ -25,13 +26,14 @@ namespace Squidex.Areas.Api.Controllers.Contents.Models
         public Status Status { get; set; }
 
         /// <summary>
-        /// The user who schedule the content.
+        /// The target date and time when the content should be scheduled.
         /// </summary>
-        public RefToken ScheduledBy { get; set; }
+        public Instant DueTime { get; set; }
 
         /// <summary>
-        /// The target date and time when the content should be scheduled.
+        /// The user who schedule the content.
         /// </summary>
-        public Instant DueTime { get; set; }
+        [Required]
+        public RefToken ScheduledBy { get; set; }
     }
 }