为了最大限度降低复杂性，本示例完全集中于签发过程。
To minimize complexity, the example focuses solely on the issuance process.
在这个示例中，实际上有两个不同的子过程需要您关心：登记行程与订票和签发机票过程。
In this example, there are actually two different sub processes that you need to be concerned with: the process of booking the trip and the process of ordering and issuing the tickets.
项目采购管理包括合同管理和变更控制过程，它们是管理由授权的项目团队成员签发的合同或采购订单所必需的。
Project Procurement Management includes the contract management and change control processes required to administer contracts or purchase orders issued by authorized project team members.
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