I have set up an Automation rule for SLA breaching to trigger a webhook. The webhook I have specified is a Slack Incoming Webhook. I have not specified headers. I have tried with or without including payload.
The automation log shows success.
The service-desk.log shows this error:
Failed executing ThenAction com.atlassian.servicedesk.plugins.automation.webhook.rulethen.WebhookThenAction asynchronously: 'Received [400 - Bad Request] when posting to webhook URL https://hooks.slack.com/services/T0252S5Q6/B79B.........
Our webhooks from System Admin for regular JIRA to Slack work just fine. This seems to only be an issue via the Service Desk automation webhook.
Has anyone encountered this problem? Not sure if next stop should be Atlassian or Slack?