Index: Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CombinedXmlSchemaDefinition.cs
===================================================================
diff -u -r0d6159f5ff86ecb8733595159267c32d68bd4bfb -r7683c48cab2de71c7e6e3960f43d491660a4b552
--- Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CombinedXmlSchemaDefinition.cs	(.../CombinedXmlSchemaDefinition.cs)	(revision 0d6159f5ff86ecb8733595159267c32d68bd4bfb)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CombinedXmlSchemaDefinition.cs	(.../CombinedXmlSchemaDefinition.cs)	(revision 7683c48cab2de71c7e6e3960f43d491660a4b552)
@@ -26,6 +26,7 @@
 using System.Net;
 using System.Text;
 using System.Xml;
+using System.Xml.Linq;
 using System.Xml.Schema;
 
 namespace Ringtoets.Common.IO.Readers
@@ -77,6 +78,16 @@
         }
 
         /// <summary>
+        /// Validates the provided XML document based on the combined schema definition.
+        /// </summary>
+        /// <param name="document">The XML document to validate.</param>
+        /// <exception cref="XmlSchemaValidationException">Thrown when the provided XML document does not match the combined schema definition.</exception>
+        public void Validate(XDocument document)
+        {
+            document.Validate(xmlSchemaSet, null);
+        }
+
+        /// <summary>
         /// Check the provided schema definitions for not being <c>null</c>, empty or only containing white spaces.
         /// </summary>
         /// <param name="mainSchemaDefinition">A string representing the main schema definition.</param>
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/Readers/CombinedXmlSchemaDefinitionTest.cs
===================================================================
diff -u -rc2e949a351b7f5d3d112a7e02d3baf8370bfb40b -r7683c48cab2de71c7e6e3960f43d491660a4b552
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/Readers/CombinedXmlSchemaDefinitionTest.cs	(.../CombinedXmlSchemaDefinitionTest.cs)	(revision c2e949a351b7f5d3d112a7e02d3baf8370bfb40b)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/Readers/CombinedXmlSchemaDefinitionTest.cs	(.../CombinedXmlSchemaDefinitionTest.cs)	(revision 7683c48cab2de71c7e6e3960f43d491660a4b552)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Xml;
+using System.Xml.Linq;
 using System.Xml.Schema;
 using Core.Common.TestUtil;
 using NUnit.Framework;
@@ -200,6 +201,54 @@
             Assert.DoesNotThrow(call);
         }
 
+        [Test]
+        public void Validate_ValidXmlDocument_DoesNotThrowException()
+        {
+            // Setup
+            string xmlFilePath = Path.Combine(testDirectoryPath, "validXmlDocument.xml");
+            XDocument validXmlDocument = XDocument.Load(xmlFilePath, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo | LoadOptions.SetBaseUri);
+
+            var combinedXmlSchemaDefinition = new CombinedXmlSchemaDefinition(validMainSchemaDefinition, new Dictionary<string, string>
+            {
+                {
+                    "NestedSchemaDefinition1.xsd", validNestedSchemaDefinition1
+                },
+                {
+                    "NestedSchemaDefinition2.xsd", validNestedSchemaDefinition2
+                }
+            });
+
+            // Call
+            TestDelegate call = () => combinedXmlSchemaDefinition.Validate(validXmlDocument);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+
+        [Test]
+        public void Validate_InvalidXmlDocument_ThrowXmlSchemaValidationException()
+        {
+            // Setup
+            string xmlFilePath = Path.Combine(testDirectoryPath, "invalidXmlDocument.xml");
+            XDocument validXmlDocument = XDocument.Load(xmlFilePath, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo | LoadOptions.SetBaseUri);
+
+            var combinedXmlSchemaDefinition = new CombinedXmlSchemaDefinition(validMainSchemaDefinition, new Dictionary<string, string>
+            {
+                {
+                    "NestedSchemaDefinition1.xsd", validNestedSchemaDefinition1
+                },
+                {
+                    "NestedSchemaDefinition2.xsd", validNestedSchemaDefinition2
+                }
+            });
+
+            // Call
+            TestDelegate call = () => combinedXmlSchemaDefinition.Validate(validXmlDocument);
+
+            // Assert
+            Assert.Throws<XmlSchemaValidationException>(call);
+        }
+
         public CombinedXmlSchemaDefinitionTest()
         {
             validMainSchemaDefinition = File.ReadAllText(Path.Combine(testDirectoryPath, "validMainSchemaDefinition.xsd"));
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/invalidXmlDocument.xml
===================================================================
diff -u
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/invalidXmlDocument.xml	(revision 0)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/invalidXmlDocument.xml	(revision 7683c48cab2de71c7e6e3960f43d491660a4b552)
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container>
+  <item naam="Item">
+    <genericElement naam="Element"/>
+  </item>
+</container>
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/validXmlDocument.xml
===================================================================
diff -u
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/validXmlDocument.xml	(revision 0)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/CombinedXmlSchemaDefinition/validXmlDocument.xml	(revision 7683c48cab2de71c7e6e3960f43d491660a4b552)
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container>
+  <item naam="Item">
+    <genericElement>Test</genericElement>
+  </item>
+</container>
\ No newline at end of file