它的目的是用来接受一个确认收到订购单的消息，并发送一个响应表示确认收到该订购单的消息已收到。

Its purpose is to receive a Po Acceptance and to send a response acknowledging receipt of the Po Acceptance.

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请看 清单2 中的公共流程，您可以发现，ACME 发送了一个订购单请求给 JoeLaptops ，然后收到一个确认收到的消息。

Referring to the public process in Figure 2, you can see that ACME sends a purchase order request to JoeLaptops and receives a receipt message.

youdao

这个Web服务有两个消息，一个订购单请求消息，另外一个是请求收到的确认消息。

There are two messages in this Web service, a request for purchase order, and a message that acknowledges the receipt of the request.

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