DeliveryIssueChange

{
  "type": "object",
  "properties": {
    "channel": {
      "type": "string",
      "enum": [
        "email",
        "webhook",
        "slack"
      ],
      "description": "The delivery channel the issue concerns. Values: email, webhook, slack."
    }
  },
  "required": [
    "channel"
  ],
  "additionalProperties": {},
  "description": "For issue_type delivery_issue: targets the alert delivery (the correction id) and names the channel that was wrong or never received."
}