error in generating xsd from xml

<?xml version="1.0"?>
<bookstore xmlns="generic">
   <book genre="autobiography">
       <title>The Autobiography of Benjamin Franklin</title>
       <author>
           <first-name>Ben</first-name>
           <last-name>Franklin</last-name>
       </author>
       <price>89.88</price>
   </book>
   <book genre="novel">
       <title>The Confidence Man</title>
       <author>
           <first-name>John</first-name>
           <last-name>Melville</last-name>
       </author>
       <price>11.99</price>
   </book>
</bookstore>

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="bookstore" targetNamespace="generic" xmlns:mstns="generic" xmlns="generic" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" attributeFormDefault="qualified" elementFormDefault="qualified">
  <xs:element name="bookstore" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="book">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="title" type="xs:string" minOccurs="0" msdata:Ordinal="0" />
              <xs:element name="price" type="xs:string" minOccurs="0" msdata:Ordinal="2" />
              <xs:element name="author" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element name="first-name" type="xs:string" minOccurs="0" />
                    <xs:element name="last-name" type="xs:string" minOccurs="0" />
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
            <xs:attribute name="genre" form="unqualified" type="xs:string" />
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>
</xs:schema>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="generic" elementFormDefault="qualified" targetNamespace="generic"> 
   <xsd:element name="bookstore" type="bookstoreType"/> 
   <xsd:complexType name="bookstoreType"> 
       <xsd:sequence maxOccurs="unbounded"> 
           <xsd:element name="book" type="bookType"/> 
       </xsd:sequence> 
   </xsd:complexType> 
   <xsd:complexType name="bookType"> 
       <xsd:sequence> 
           <xsd:element name="title" type="xsd:string"/> 
           <xsd:element name="author" type="authorName"/> 
           <xsd:element name="price" type="xsd:decimal"/> 
       </xsd:sequence> 
       <xsd:attribute name="genre" type="xsd:string"/> 
   </xsd:complexType> 
   <xsd:complexType name="authorName"> 
       <xsd:sequence> 
           <xsd:element name="first-name" type="xsd:string"/> 
           <xsd:element name="last-name" type="xsd:string"/> 
       </xsd:sequence> 
   </xsd:complexType> 
</xsd:schema>