Index: Ringtoets/AssemblyTool/src/Ringtoets.AssemblyTool.IO/Model/Enums/AssemblyXmlEnumIdentifiers.cs
===================================================================
diff -u -r1ea93714d7063df84c6ecf043209ef821ca54a70 -r4bcb41b0973045c4cde33e3dd5d36133d7bd775e
--- Ringtoets/AssemblyTool/src/Ringtoets.AssemblyTool.IO/Model/Enums/AssemblyXmlEnumIdentifiers.cs	(.../AssemblyXmlEnumIdentifiers.cs)	(revision 1ea93714d7063df84c6ecf043209ef821ca54a70)
+++ Ringtoets/AssemblyTool/src/Ringtoets.AssemblyTool.IO/Model/Enums/AssemblyXmlEnumIdentifiers.cs	(.../AssemblyXmlEnumIdentifiers.cs)	(revision 4bcb41b0973045c4cde33e3dd5d36133d7bd775e)
@@ -137,6 +137,11 @@
         /// </summary>
         public const string SerializableAssessmentSectionCategoryGroupD = "D";
 
+        /// <summary>
+        /// Identifier for <see cref="SerializableAssessmentSectionCategoryGroup.NotAssessed"/>.
+        /// </summary>
+        public const string SerializableAssessmentSectionCategoryGroupNotAssessed = "NGO";
+
         #endregion
 
         #region SerializableAssemblyMethod