我今天试图使用SAP云平台的SAP WebIDE Fullstack时，发现打不开，
遇到如下错误信息：
You are not authorized to work with SAP Web IDE.
Make sure of the following:
You entered the correct username and password.
Your account administrator has enabled principal propagation in your account. See the documentation.
点击documentation，找到了帮助文档，知道如何修复这个问题：
进入SAP云平台的subaccount里的security->Trust设置：
把Local service Provider里的principal Propogation从default改成enabled即可：
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