考虑以下 CAML 查询:
<Query>
<Where>
<And>
<Eq>
<FieldRef Name="Field1"/>
<Value Type="Text">Field value 1</Value>
</Eq>
<Eq>
<FieldRef Name="Field2"/>
<Value Type="Text">Field value 2</Value>
</Eq>
<IsNull>
<FieldRef Name="Field3"/>
</IsNull>
</And>
</Where>
SharePoint 提出了一个Microsoft.SharePoint.SoapServer.SoapServerException
. 这里有什么问题?