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>