diff --git a/IRaCIS.Core.Domain/Reading/ReadingCriterion/TrialCriterionAdditionalAssessmentType.cs b/IRaCIS.Core.Domain/Reading/ReadingCriterion/TrialCriterionAdditionalAssessmentType.cs
index 1a424b525..3f385cdde 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingCriterion/TrialCriterionAdditionalAssessmentType.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingCriterion/TrialCriterionAdditionalAssessmentType.cs
@@ -62,12 +62,7 @@ namespace IRaCIS.Core.Domain.Models
         /// </summary>
 		[Required]
 		public Guid UpdateUserId { get; set; }
-	
-		/// <summary>
-        /// TrialId
-        /// </summary>
-		[Required]
-		public Guid TrialId { get; set; }
+
 	 
 	 }