Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Configurations/MacroStabilityInwardsCalculationConfigurationSchemaIdentifiers.cs
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diff -u -raf341ae554425a1832b712c219f5eff86c5d2282 -r2ef33b18220a8c8682c261ae78f261e85ce9a21a
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Configurations/MacroStabilityInwardsCalculationConfigurationSchemaIdentifiers.cs	(.../MacroStabilityInwardsCalculationConfigurationSchemaIdentifiers.cs)	(revision af341ae554425a1832b712c219f5eff86c5d2282)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Configurations/MacroStabilityInwardsCalculationConfigurationSchemaIdentifiers.cs	(.../MacroStabilityInwardsCalculationConfigurationSchemaIdentifiers.cs)	(revision 2ef33b18220a8c8682c261ae78f261e85ce9a21a)
@@ -96,6 +96,21 @@
         public const string PhreaticLine1Element = "pl1";
 
         /// <summary>
+        /// The identifier for the phreatic line 2 elements.
+        /// </summary>
+        public const string PhreaticLine2Element = "pl2";
+
+        /// <summary>
+        /// The identifier for the phreatic line 3 elements.
+        /// </summary>
+        public const string PhreaticLine3Element = "pl3";
+
+        /// <summary>
+        /// The identifier for the phreatic line 4 elements.
+        /// </summary>
+        public const string PhreaticLine4Element = "pl4";
+
+        /// <summary>
         /// The tag of the element containing the value indicating the minimum level phreatic line at dike top river.
         /// </summary>
         public const string MinimumLevelPhreaticLineAtDikeTopRiverElement = "buitenkruin";
@@ -105,6 +120,21 @@
         /// </summary>
         public const string MinimumLevelPhreaticLineAtDikeTopPolderElement = "binnenkruin";
 
+        /// <summary>
+        /// The identifier for leakage length elements.
+        /// </summary>
+        public const string LeakageLengthElement = "leklengtes";
+
+        /// <summary>
+        /// The tag of the element containing the value indicating the phreatic line inwards leakage length or piezometric head.
+        /// </summary>
+        public const string PhreaticLineInwardsElement = "binnenwaarts";
+
+        /// <summary>
+        /// he tag of the element containing the value indicating the phreatic line outwards leakage length or piezometric head.
+        /// </summary>
+        public const string PhreaticLineOutwardsElement = "buitenwaarts";
+
         #endregion
 
         /// <summary>