| Field | Type | Required | Description |
|---|---|---|---|
slackChannelId | String! | Yes | Slack channel for the test message. Slack refusals return status failed with a failure code. A missing Slack connection returns validation-failed; a transient connection refresh failure returns external-service-error. |
text | String | No | 1-4000 characters; default ‘Veryfront Slack connection test’. |