diff --git a/PROMS/Volian.Controls.Library/DisplayApplicability.cs b/PROMS/Volian.Controls.Library/DisplayApplicability.cs
index d5a06001..a59e33ab 100644
--- a/PROMS/Volian.Controls.Library/DisplayApplicability.cs
+++ b/PROMS/Volian.Controls.Library/DisplayApplicability.cs
@@ -69,7 +69,7 @@ namespace Volian.Controls.Library
 					{
 						MyItemInfo = _MyDisplayTabItem.MyItemInfo;
 					}
-					if (MyItemInfo.IsRNOPart == true)
+					if (MyItemInfo.IsRNOPart == true) // C2026-027 disable “Set_At_All_Level” button on the Applicability tab when RNO step is active.
 					{
 						btnApplicabilitychg.Enabled = false;
 					}
@@ -402,7 +402,7 @@ namespace Volian.Controls.Library
 				if (_MyItemInfo != null)
 				{
 					if (this.Visible == false) return;
-					if (_MyItemInfo.IsRNOPart == true) // Check if step is an RNO disable "Set All To Level" button.
+					if (_MyItemInfo.IsRNOPart == true) // C2026-027 disable “Set_At_All_Level” button on the Applicability tab when RNO step is active.
 					{
 						btnApplicabilitychg.Enabled = false;
 					}