diff --git a/src/Metadata/Converter/SchemaToTypesConverter.php b/src/Metadata/Converter/SchemaToTypesConverter.php
index 089df38..e1f3583 100644
--- a/src/Metadata/Converter/SchemaToTypesConverter.php
+++ b/src/Metadata/Converter/SchemaToTypesConverter.php
@@ -22,7 +22,10 @@ public function __invoke(Schema $schema, TypesConverterContext $context): TypeCo
         return $context->visit($schema, function () use ($schema, $context): TypeCollection {
             return new TypeCollection(
                 ...filter_nulls([
-                    ...map($schema->getTypes(), static fn (Type $type): SoapType => (new TypeVisitor())($type, $context)),
+                    ...flat_map(
+                        $schema->getTypes(),
+                        static fn (Type $type): TypeCollection => (new TypeVisitor())($type, $context)
+                    ),
                     ...map($schema->getElements(), static fn (ElementDef $element): ?SoapType => (new ElementVisitor())($element, $context)),
                     ...flat_map(
                         $schema->getSchemas(),
diff --git a/src/Metadata/Converter/Types/Visitor/ElementVisitor.php b/src/Metadata/Converter/Types/Visitor/ElementVisitor.php
index ce1eaa3..04e6f4c 100644
--- a/src/Metadata/Converter/Types/Visitor/ElementVisitor.php
+++ b/src/Metadata/Converter/Types/Visitor/ElementVisitor.php
@@ -3,7 +3,7 @@
 
 namespace Soap\WsdlReader\Metadata\Converter\Types\Visitor;
 
-use GoetasWebservices\XML\XSDReader\Schema\Element\ElementDef;
+use GoetasWebservices\XML\XSDReader\Schema\Element\AbstractElementSingle;
 use Soap\Engine\Metadata\Model\Type as EngineType;
 use Soap\Engine\Metadata\Model\XsdType as MetaType;
 use Soap\WsdlReader\Metadata\Converter\Types\Configurator;
@@ -12,7 +12,7 @@
 
 final class ElementVisitor
 {
-    public function __invoke(ElementDef $element, TypesConverterContext $context): ?EngineType
+    public function __invoke(AbstractElementSingle $element, TypesConverterContext $context): ?EngineType
     {
         // When there is no type set on the element, we cannot do anything with it here. There should always be one somehow.
         $xsdType = $element->getType();
diff --git a/src/Metadata/Converter/Types/Visitor/TypeVisitor.php b/src/Metadata/Converter/Types/Visitor/TypeVisitor.php
index 052aaa7..f4abdb8 100644
--- a/src/Metadata/Converter/Types/Visitor/TypeVisitor.php
+++ b/src/Metadata/Converter/Types/Visitor/TypeVisitor.php
@@ -3,24 +3,72 @@
 
 namespace Soap\WsdlReader\Metadata\Converter\Types\Visitor;
 
+use GoetasWebservices\XML\XSDReader\Schema\Element\AbstractElementSingle;
+use GoetasWebservices\XML\XSDReader\Schema\Element\ElementItem;
+use GoetasWebservices\XML\XSDReader\Schema\Element\ElementRef;
+use GoetasWebservices\XML\XSDReader\Schema\Type\ComplexType;
 use GoetasWebservices\XML\XSDReader\Schema\Type\Type;
+use Soap\Engine\Metadata\Collection\TypeCollection;
 use Soap\Engine\Metadata\Model\Type as EngineType;
 use Soap\Engine\Metadata\Model\XsdType as MetaType;
 use Soap\WsdlReader\Metadata\Converter\Types\Configurator;
 use Soap\WsdlReader\Metadata\Converter\Types\TypesConverterContext;
 use function Psl\Fun\pipe;
+use function Psl\Vec\filter_nulls;
+use function Psl\Vec\map;
 
 final class TypeVisitor
 {
-    public function __invoke(Type $xsdType, TypesConverterContext $context): EngineType
+    public function __invoke(Type $xsdType, TypesConverterContext $context): TypeCollection
     {
         $configure = pipe(
             static fn (MetaType $metaType): MetaType => (new Configurator\TypeConfigurator())($metaType, $xsdType, $context),
         );
 
-        return new EngineType(
-            $configure(MetaType::guess($xsdType->getName() ?? '')),
-            (new PropertiesVisitor())($xsdType, $context)
+        return new TypeCollection(
+            new EngineType(
+                $configure(MetaType::guess($xsdType->getName() ?? '')),
+                (new PropertiesVisitor())($xsdType, $context)
+            ),
+            ...$this->parseNestedInlineElements($xsdType, $context),
+        );
+    }
+
+    /**
+     * Complex types may contain nested inline types.
+     * Let's unwrap them:
+     */
+    private function parseNestedInlineElements(Type $xsdType, TypesConverterContext $context): TypeCollection
+    {
+        if (!$xsdType instanceof ComplexType) {
+            return new TypeCollection();
+        }
+
+        $elementVisitor = new ElementVisitor();
+
+        return new TypeCollection(
+            ...filter_nulls(
+                map(
+                    $xsdType->getElements(),
+                    static function (ElementItem $element) use ($elementVisitor, $context): ?EngineType {
+                        if (!$element instanceof AbstractElementSingle || $element instanceof ElementRef) {
+                            return null;
+                        }
+
+                        // There is no need to create types for simple elements like strings.
+                        if (!$element->getType() instanceof ComplexType) {
+                            return null;
+                        }
+
+                        // If the element links to a named type, we already know about it.
+                        if ($element->getType()?->getName()) {
+                            return null;
+                        }
+
+                        return $elementVisitor($element, $context);
+                    }
+                )
+            )
         );
     }
 }
diff --git a/tests/PhpCompatibility/schema036.phpt b/tests/PhpCompatibility/schema036.phpt
index eb07c55..1105014 100644
--- a/tests/PhpCompatibility/schema036.phpt
+++ b/tests/PhpCompatibility/schema036.phpt
@@ -27,4 +27,7 @@ Types:
   > http://test-uri/:testType {
     int $int
     testType2 $testType2
-  }
\ No newline at end of file
+  }
+  > http://test-uri/:testType2 {
+    int $int
+  }
diff --git a/tests/PhpCompatibility/schema1002.phpt b/tests/PhpCompatibility/schema1002.phpt
new file mode 100644
index 0000000..e27b1c3
--- /dev/null
+++ b/tests/PhpCompatibility/schema1002.phpt
@@ -0,0 +1,51 @@
+--TEST--
+SOAP XML Schema 18: union with list
+--FILE--
+<?php
+include __DIR__."/test_schema.inc";
+$schema = <<<EOF
+    <complexType name="VoluntaryChangesType">
+		<annotation>
+			<documentation xml:lang="en">Specifies charges and/or penalties associated with making ticket changes after purchase.</documentation>
+		</annotation>
+		<sequence minOccurs="0">
+			<element name="Penalty" minOccurs="0">
+				<annotation>
+					<documentation xml:lang="en">Specifies penalty charges as either a currency amount or a percentage of the fare</documentation>
+				</annotation>
+				<complexType>
+					<attribute name="PenaltyType" type="string" use="optional">
+						<annotation>
+							<documentation xml:lang="en">Indicates the type of penalty involved in the search or response.</documentation>
+						</annotation>
+					</attribute>
+					<attribute name="DepartureStatus" type="string" use="optional">
+						<annotation>
+							<documentation xml:lang="en">Identifier used to indicate whether the change occurs before or after departure from the origin city.</documentation>
+						</annotation>
+					</attribute>
+				</complexType>
+			</element>
+		</sequence>
+		<attribute name="VolChangeInd" type="boolean" use="optional">
+			<annotation>
+				<documentation xml:lang="en">Indicator used to specify whether voluntary change and other penalties are involved in the search or response.</documentation>
+			</annotation>
+		</attribute>
+	</complexType>
+EOF;
+test_schema($schema,'type="tns:VoluntaryChangesType"');
+?>
+--EXPECT--
+Methods:
+  > test(VoluntaryChangesType $testParam): void
+
+Types:
+  > http://test-uri/:VoluntaryChangesType {
+    ?Penalty $Penalty
+    @boolean $VolChangeInd
+  }
+  > http://test-uri/:Penalty {
+    @string $PenaltyType
+    @string $DepartureStatus
+  }