{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/microsoft.graph.serviceAnnouncementBase",
  "title": "microsoft.graph.serviceAnnouncementBase",
  "allOf": [
    {
      "$ref": "#/components/schemas/microsoft.graph.entity"
    },
    {
      "title": "serviceAnnouncementBase",
      "required": [
        "@odata.type"
      ],
      "type": "object",
      "properties": {
        "details": {
          "type": "array",
          "items": {
            "$ref": "#/components/schemas/microsoft.graph.keyValuePair"
          },
          "description": "More details about service event. This property doesn't support filters."
        },
        "endDateTime": {
          "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
          "type": "string",
          "description": "The end time of the service event.",
          "format": "date-time",
          "nullable": true
        },
        "lastModifiedDateTime": {
          "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
          "type": "string",
          "description": "The last modified time of the service event.",
          "format": "date-time"
        },
        "startDateTime": {
          "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
          "type": "string",
          "description": "The start time of the service event.",
          "format": "date-time"
        },
        "title": {
          "type": "string",
          "description": "The title of the service event."
        },
        "@odata.type": {
          "type": "string"
        }
      },
      "discriminator": {
        "propertyName": "@odata.type",
        "mapping": {
          "#microsoft.graph.serviceHealthIssue": "#/components/schemas/microsoft.graph.serviceHealthIssue",
          "#microsoft.graph.serviceUpdateMessage": "#/components/schemas/microsoft.graph.serviceUpdateMessage"
        }
      }
    }
  ]
}