webservice 客户端调用时验证wsdl出错

写了一个webservice，本地测试没问题，提交到第三方调用wsdl时验证报错

Value “matnr” is not allowed for the attribute "name" of type "NCName" in element "/schema/complexType("matierials)/sequence/element("MATNR")

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:tns="http://webService.ceic.com/"
    targetNamespace="http://webService.ceic.com/"
    elementFormDefault="qualified">

    <xs:element name="dataInfoRequest">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="materialsList" maxOccurs="unbounded" type="tns:materials" />
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:complexType name="materials">
        <xs:sequence>
            <xs:element name=" MATNR  " type="xs:string"/>
            <xs:element name=" MAKTX  " type="xs:string"/>
            <xs:element name=" CHARG  " type="xs:string"/>
            <xs:element name=" WERKS  " type="xs:string"/>
            <xs:element name=" WERKS_NAME " type="xs:string"/>
            <xs:element name=" LGORT  " type="xs:string"/>
            <xs:element name=" LGOBE  " type="xs:string"/>
            <xs:element name=" LGPBE  " type="xs:string"/>
            <xs:element name=" BWTAR  " type="xs:string"/>
            <xs:element name=" MAKTL  " type="xs:string"/>
            <xs:element name=" WGBEZ  " type="xs:string"/>
            <xs:element name=" SOBKZ  " type="xs:string"/>
            <xs:element name=" LIFNR  " type="xs:string"/>
            <xs:element name=" LIFNR_NAME  " type="xs:string"/>
            <xs:element name=" PSPNR " type="xs:int"/>
            <xs:element name=" POSID  " type="xs:string"/>
            <xs:element name=" MTART  " type="xs:string"/>
            <xs:element name=" MEINS  " type="xs:string"/>
            <xs:element name=" MSEH6  " type="xs:string"/>
            <xs:element name=" WAERS  " type="xs:string"/>
        </xs:sequence>
    </xs:complexType>

我的解答思路和尝试过的方法：百度了好久，可能原因是xsd文件格式不正确

我想要达到的结果：提供解决方法，指出你认为的问题所在

你试试把name后面的空格取消