The way you map incoming request to the endpoints is completely up to you: by default, we supply mappings that are based on message content, or the SOAPAction header.
The map supplied when creating a virtual system must provide values for any missing properties and parameters, and can additionally supply values to override the default values.
在创建虚拟系统时给出的映射必须为任何缺失的属性和参数提供值，并能另外提供值以覆盖默认值。
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It can be painstaking work to map out the timetable of key events for the supply chain group, the finance group, and sales.