你好,
报错已经说的很清楚了,当使用审批功能时,收件人不能是通讯组,这个设计使然,我在我的测试坏境(Exchange 2016 CU9)也重现了你的问题,如下:

作为一个解决方法,你可以尝试创建一个类似的规则,看是否能满足你的条件,如下:

Best Regards,
Niko Cheng
Please remember to
mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact
tnsf@microsoft.com.
Click
here to learn more. Visit the dedicated
forum to share, explore and talk to experts about Microsoft Teams.