我正在考虑使用Excel文件将数据加载到EPA GHG模式（ghg_subpartp_inputs_v1.0.xsd）以定义XML Subpartp Inputs数据的可行性。
我没有精通或使用Excel和xml-schemas。
SubpartP架构具有嵌套的复杂元素，并且不会通过XML Maps工具接受到Excel。
错误消息：＆＃34;无法加载指定的XML或架构源。＆＃34;
我认为这是因为它是一个部分架构，意味着要包含在其他架构中？
这是架构本身：
架构名称：ghg_subpartp_inputs_v1.0.xsd 描述：输入验证工具 - 子部分P输入的XML模式
<xsd:complexType name="SubpartPInputsType">
<xsd:sequence>
<xsd:element name="SubpartPUnitInputs" minOccurs="0" maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="UnitName" type="xsd:string"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="EquationP1FeedstockInputs" type="EquationP1FeedstockInputsType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="EquationP2FeedstockInputs" type="EquationP2FeedstockInputsType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="EquationP3FeedstockInputs" type="EquationP3FeedstockInputsType" minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:unique name="UniqueSubpartPFeedstockName">
<xsd:selector xpath="Values/*"/>
<xsd:field xpath="FeedstockName"/>
</xsd:unique>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="EquationP1FeedstockInputsType">
<xsd:sequence>
<xsd:element name="FeedstockName" type="xsd:string"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MassOrVolume" type="MassOrVolumeIndicatorType"/>
<xsd:element name="EquationP1MonthlyInputs" minOccurs="0" maxOccurs="12">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MonthName" type="MonthNameList"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Mass" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg of fuel or feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="Volume" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: scf (at standard conditions of 68 degrees F and atmospheric pressure) of fuel or feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="CarbonContent" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg C per kg of fuel or feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="MolecularWeight" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg/kg-mole</xsd:documentation>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:unique name="UniqueEquationP1MonthName">
<xsd:selector xpath="*"/>
<xsd:field xpath="MonthName"/>
</xsd:unique>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="EquationP2FeedstockInputsType">
<xsd:sequence>
<xsd:element name="FeedstockName" type="xsd:string"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MassOrVolume" type="MassOrVolumeIndicatorType"/>
<xsd:element name="EquationP2MonthlyInputs" minOccurs="0" maxOccurs="12">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MonthName" type="MonthNameList"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Mass" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg of fuel or feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="Volume" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: gallons of fuel or feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="CarbonContent" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg C per kg of fuel or feedstock if measured as mass, or kg C per gallon of fuel or feedstock if measured as volume</xsd:documentation>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:unique name="UniqueEquationP2MonthName">
<xsd:selector xpath="*"/>
<xsd:field xpath="MonthName"/>
</xsd:unique>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="EquationP3FeedstockInputsType">
<xsd:sequence>
<xsd:element name="FeedstockName" type="xsd:string"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="EquationP3MonthlyInputs" minOccurs="0" maxOccurs="12">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MonthName" type="MonthNameList"/>
<xsd:element name="Values">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Mass" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg of fuel and feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="CarbonContent" type="xsd:decimal" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Required units of measure for this equation input: kg C per kg of fuel and feedstock</xsd:documentation>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:unique name="UniqueEquationP3MonthName">
<xsd:selector xpath="*"/>
<xsd:field xpath="MonthName"/>
</xsd:unique>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
我应该怎么做才能创建将为此架构创建可接受的XML的Excel文件？