我第一次尝试Business Application Studio时，遇到Access Denied的错误消息：
Access Denied
You do not have permission to access SAP Business Application Studio.Please contact your account administrator to request access.
https://help.sap.com/viewer/9d1db9835307451daa8c930fbd9ab264/Cloud/en-US/01e69c53003c4b0a8a64310a3f08867d.html
在上述SAP官网里找到帮助文档：
点击Security区域，打开Trust configuration，点击SAP ID Service超链接：
点击Assign role Collection：
添加Business_Application_Studio_Developer这几个相关的role：
之后问题解决，可以登陆了：
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