Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointQueries.cs
===================================================================
diff -u -r0fd23ff8e68b5f0d18d344d104bc68216cb49b51 -r2cfb421b8f27d648e22b13453ae1f2d9deb54f65
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointQueries.cs	(.../IllustrationPointQueries.cs)	(revision 0fd23ff8e68b5f0d18d344d104bc68216cb49b51)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointQueries.cs	(.../IllustrationPointQueries.cs)	(revision 2cfb421b8f27d648e22b13453ae1f2d9deb54f65)
@@ -26,8 +26,8 @@
     /// </summary>
     internal static class IllustrationPointQueries
     {
-        private const string firstPeriod = "PeriodId = (SELECT MIN(PeriodId) FROM DesignPointResults)";
-        private const string lastIteration = "OuterIterationId = (SELECT MAX(OuterIterationId) FROM DesignPointResults)";
+        private const string firstPeriod = "PeriodId = (SELECT MIN(PeriodId) FROM GoverningWind)";
+        private const string lastIteration = "OuterIterationId = (SELECT MAX(OuterIterationId) FROM GoverningWind)";
 
         /// <summary>
         /// Selects all the closing situations.
@@ -47,7 +47,8 @@
             $"WindDirections.WindDirectionId = GoverningWind.WindDirectionId as {IllustrationPointsDatabaseConstants.IsGoverning} " +
             "FROM WindDirections " +
             "JOIN GoverningWind " +
-            $"WHERE {lastIteration};";
+            $"WHERE {lastIteration}" +
+            $"AND {firstPeriod};";
 
         /// <summary>
         /// Selects all the sub mechanisms.
@@ -77,8 +78,7 @@
             "FROM DesignAlpha " +
             "JOIN Stochasts USING(StochastId) " +
             "WHERE LevelTypeId = 4 " +
-            $"AND {lastIteration} " +
-            $"AND {firstPeriod};";
+            $"AND {lastIteration};";
 
         /// <summary>
         /// Selects the beta values for a general result.
@@ -87,8 +87,7 @@
             $"SELECT {IllustrationPointsDatabaseConstants.BetaValue} " +
             "FROM DesignBeta " +
             "WHERE LevelTypeId = 4 " +
-            $"AND {lastIteration} " +
-            $"AND {firstPeriod};";
+            $"AND {lastIteration};";
 
         /// <summary>
         /// Selects the alpha values for each fault tree illustration point.
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointsParser.cs
===================================================================
diff -u -rc2c7e9621863d470ddd3a1d5c0e4913844066aae -r2cfb421b8f27d648e22b13453ae1f2d9deb54f65
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointsParser.cs	(.../IllustrationPointsParser.cs)	(revision c2c7e9621863d470ddd3a1d5c0e4913844066aae)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IllustrationPoints/IllustrationPointsParser.cs	(.../IllustrationPointsParser.cs)	(revision 2cfb421b8f27d648e22b13453ae1f2d9deb54f65)
@@ -374,6 +374,11 @@
             ICollection<Tuple<int?, int, Type, CombinationType>> results)
         {
             var dataKey = new ThreeKeyIndex(windDirectionClosingSituation.Item1, windDirectionClosingSituation.Item3, faultTreeId);
+
+            if (!faultTreeBetaValues.ContainsKey(dataKey))
+            {
+                throw new HydraRingFileParserException(Resources.IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found);
+            }
             var illustrationPoint = new FaultTreeIllustrationPoint(faultTrees[faultTreeId], faultTreeBetaValues[dataKey], combinationType);
             if (faultTreeStochasts.ContainsKey(dataKey))
             {
@@ -406,8 +411,13 @@
                 AddRange(illustrationPointResults, subMechanismResults[dataKey]);
             }
 
-            string submechanismIllustrationPointName = subMechanisms[subMechanismId];
+            if (!subMechanismBetaValues.ContainsKey(dataKey))
+            {
+                throw new HydraRingFileParserException(Resources.IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found);
+            }
             double subMechanismIllustrationPointBeta = subMechanismBetaValues[dataKey];
+
+            string submechanismIllustrationPointName = subMechanisms[subMechanismId];
             var illustrationPoint = new SubMechanismIllustrationPoint(submechanismIllustrationPointName,
                                                                       illustrationPointStochasts,
                                                                       illustrationPointResults,
@@ -437,10 +447,14 @@
         private void ParseGeneralBetaValue(HydraRingDatabaseReader reader)
         {
             Dictionary<string, object>[] betaValues = GetIterator(reader).ToArray();
-            if (betaValues.Length != 1)
+            if (betaValues.Length > 1)
             {
                 throw new HydraRingFileParserException(Resources.IllustrationPointsParser_Parse_Multiple_values_for_beta_of_illustration_point_found);
             }
+            if (betaValues.Length == 0)
+            {
+                throw new HydraRingFileParserException(Resources.IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found);
+            }
             beta = ConvertToDouble(betaValues[0][IllustrationPointsDatabaseConstants.BetaValue],
                                    IllustrationPointsDatabaseConstants.BetaValue);
         }
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.Designer.cs
===================================================================
diff -u -r6c058f12138b8a73a78eacd10357d9caa81ed67d -r2cfb421b8f27d648e22b13453ae1f2d9deb54f65
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 6c058f12138b8a73a78eacd10357d9caa81ed67d)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 2cfb421b8f27d648e22b13453ae1f2d9deb54f65)
@@ -158,6 +158,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Geen waarde voor de betrouwbaarheidsindex voor 1 illustratiepunt gevonden in de uitvoer database..
+        /// </summary>
+        internal static string IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found {
+            get {
+                return ResourceManager.GetString("IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Er is geen resultaat voor overslag en overloop gevonden in de Hydra-Ring uitvoerdatabase..
         /// </summary>
         internal static string OvertoppingCalculationWaveHeightParser_No_overtopping_found_in_output_file {
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.resx
===================================================================
diff -u -r6c058f12138b8a73a78eacd10357d9caa81ed67d -r2cfb421b8f27d648e22b13453ae1f2d9deb54f65
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.resx	(.../Resources.resx)	(revision 6c058f12138b8a73a78eacd10357d9caa81ed67d)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Properties/Resources.resx	(.../Resources.resx)	(revision 2cfb421b8f27d648e22b13453ae1f2d9deb54f65)
@@ -150,6 +150,9 @@
   <data name="IllustrationPointsParser_Parse_Multiple_values_for_beta_of_illustration_point_found" xml:space="preserve">
     <value>Meerdere waarden voor de betrouwbaarheidsindex voor 1 illustratiepunt gevonden in de uitvoer database.</value>
   </data>
+  <data name="IllustrationPointsParser_Parse_No_values_for_beta_of_illustration_point_found" xml:space="preserve">
+    <value>Geen waarde voor de betrouwbaarheidsindex voor 1 illustratiepunt gevonden in de uitvoer database.</value>
+  </data>
   <data name="IllustrationPointsParser_Parse_Column_0_is_Null" xml:space="preserve">
     <value>Er is geen waarde gevonden voor kolom '{0}' tijdens het uitlezen van de illustratiepunten in de uitvoer database.</value>
   </data>
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/IllustrationPoints/IllustrationPointsParserTest.cs
===================================================================
diff -u -rc2c7e9621863d470ddd3a1d5c0e4913844066aae -r2cfb421b8f27d648e22b13453ae1f2d9deb54f65
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/IllustrationPoints/IllustrationPointsParserTest.cs	(.../IllustrationPointsParserTest.cs)	(revision c2c7e9621863d470ddd3a1d5c0e4913844066aae)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/IllustrationPoints/IllustrationPointsParserTest.cs	(.../IllustrationPointsParserTest.cs)	(revision 2cfb421b8f27d648e22b13453ae1f2d9deb54f65)
@@ -129,6 +129,24 @@
         }
 
         [Test]
+        [TestCase("NoBetaSubMechanism")]
+        [TestCase("NoBetaFaultTree")]
+        [TestCase("NoBetaGeneralResult")]
+        public void Parse_NoBetaValues_ThrowsHydraRingFileParserException(string workingDirectory)
+        {
+            // Setup
+            string path = Path.Combine(testDirectory, workingDirectory);
+            var parser = new IllustrationPointsParser();
+
+            // Call
+            TestDelegate test = () => parser.Parse(path, 1);
+
+            // Assert
+            var exception = Assert.Throws<HydraRingFileParserException>(test);
+            Assert.AreEqual("Geen waarde voor de betrouwbaarheidsindex voor 1 illustratiepunt gevonden in de uitvoer database.", exception.Message);
+        }
+
+        [Test]
         [TestCase(nameof(IllustrationPointsDatabaseConstants.AlphaValue), IllustrationPointsDatabaseConstants.AlphaValue)]
         [TestCase(nameof(IllustrationPointsDatabaseConstants.BetaValue), IllustrationPointsDatabaseConstants.BetaValue)]
         [TestCase(nameof(IllustrationPointsDatabaseConstants.Duration), IllustrationPointsDatabaseConstants.Duration)]