我们可以通过将依赖的自定义API(API B)"user_impersonation"作用域配置为我们Bot的Cortana通道配置来解决此问题.进行此配置更改后，我们无需从Microsoft Bot应用程序为API B生成On-Behalf-Of令牌.

We could able to resolve this issue by configuring our dependent custom API (API B) "user_impersonation" scope to Cortana channel configuration to our Bot. With this configuration change, we do not need to generate On-Behalf-Of token to API B from our Microsoft Bot application.

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