Create an application on the page https://api.slack.com/apps?new_app=1
In the section OAuth & Permissions
https://api.slack.com/apps/<ID>/oauth
add scopes
chat:write
incoming-webhook
Install an application to the workspace, select a channel for notifications and coping OAuth Access Token
In slack application add this application to the channel (Add an app
)
Use OAuth in the balerter configuration
Mission Complete