Document from XML schema which has abstract types

I have created document from XML schema which has abstract types. webMethods not generating *doctype element which should have pick list elements. Please see below xml schema. I am using applicationInitiationRequest as root element.

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns="http://www.example.com/1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.com/1.0" elementFormDefault="qualified" attributeFormDefault="unqualified">
	<xs:element name="applicationInitiationRequest">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="applicationDetails" type="applicationDetailsBaseType"/>
				<xs:element name="applicationContent" type="applicationContentBaseType"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:complexType name="applicationContentBaseType">
		<xs:sequence>
		    <xs:element name="isEmailClientStatement" type="xs:boolean" minOccurs="0" />
		</xs:sequence>
	</xs:complexType>
	<xs:complexType name="applicationDetailsBaseType" abstract="true">
		<xs:sequence>
			<xs:element name="testIndicator" type="xs:boolean"/>
			<xs:element name="autoSubmit" type="xs:boolean" minOccurs="0"/>
			<xs:element name="badgeCode" minOccurs="0">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:minLength value="1"/>
						<xs:maxLength value="4"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:element>
			<xs:element name="externalReferenceId" minOccurs="0">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:minLength value="1"/>
						<xs:maxLength value="32"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:element>
			<xs:element name="primaryApplicantFirstName">
				
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:minLength value="1"/>
						<xs:maxLength value="15"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:element>
			<xs:element name="primaryApplicantLastName">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:minLength value="1"/>
						<xs:maxLength value="25"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<xs:complexType name="directApplicationDetailsType" abstract="false">
		<xs:complexContent>
			<xs:extension base="applicationDetailsBaseType">
				<xs:sequence>
					<xs:element name="primaryApplicantDOB" type="xs:date">
						
					</xs:element>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<xs:complexType name="intermediaryApplicationDetailsType" abstract="false">
		<xs:complexContent>
			<xs:extension base="applicationDetailsBaseType">
				<xs:sequence>
					<xs:element name="names" type="xs:string" minOccurs="0">
						
					</xs:element>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
</xs:schema>

I have removed abstract=false text from above schema. Now the document has been generated with *doctype as expected.

Thanks,
Sai