# 向私人 Slack 频道发送消息时出现 422 错误

**URL:** <https://meta.discourse.org/t/422-error-when-sending-message-to-private-slack-channel/119037>\
**Category:** Product Support\
**Tags:** chat-integration\
**Created:** [2019 年5 月 29 日 21:46 UTC](https://meta.discourse.org/t/422-error-when-sending-message-to-private-slack-channel/119037 "2019-05-29T21:46:30Z")\
**Posts on this page:** 1\
**Showing post:** 3

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作者： ![yanokwa](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/yanokwa/32/105083_2.png) [@yanokwa](https://meta.discourse.org/u/yanokwa)\
发布日期： [2019 年6 月 12 日 12:35 UTC](https://meta.discourse.org/t/422-error-when-sending-message-to-private-slack-channel/119037/3 "2019-06-12T12:35:30Z")

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All scopes are configured as required by the docs.

 ![scopes](https://global.discourse-cdn.com/meta/original/3X/d/5/d50dbc773d97daf3afb7f458f21dac507702215d.png)

`/discourse watch private-category` works from the private channel. I can see the rule get created in Discourse.

When I try to send a test message from Discourse with an ID of a topic in the private category, I get the 422.

chat integration discourse username is `system`

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_[View the full topic](https://meta.discourse.org/t/422-error-when-sending-message-to-private-slack-channel/119037)._