{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://software.example/schemas/team-subscription-4.json",
  "title": "Digital subscription attributes",
  "description": "Service-defined attributes for a recurring collaborative software plan.",
  "type": "object",
  "required": [
    "billing_term",
    "renews_automatically",
    "cancellation_timing",
    "seat_limits",
    "features"
  ],
  "additionalProperties": false,
  "properties": {
    "billing_term": {
      "type": "string",
      "title": "Billing term",
      "description": "ISO 8601 duration covered by the Price Preview.",
      "pattern": "^P(?=\\d|T\\d)(?:\\d+Y)?(?:\\d+M)?(?:\\d+W)?(?:\\d+D)?(?:T(?:\\d+H)?(?:\\d+M)?(?:\\d+(?:\\.\\d+)?S)?)?$"
    },
    "renews_automatically": {
      "type": "boolean",
      "title": "Automatic renewal"
    },
    "cancellation_timing": {
      "type": "string",
      "title": "Cancellation timing",
      "enum": [
        "immediate",
        "end_of_term"
      ]
    },
    "seat_limits": {
      "$ref": "#/$defs/seat_limits"
    },
    "features": {
      "$ref": "#/$defs/features"
    }
  },
  "$defs": {
    "seat_limits": {
      "type": "object",
      "title": "Seat limits",
      "required": [
        "minimum",
        "maximum"
      ],
      "additionalProperties": false,
      "properties": {
        "minimum": {
          "type": "integer",
          "minimum": 1,
          "title": "Minimum seats",
          "x-odp-comparison": "numeric"
        },
        "maximum": {
          "type": "integer",
          "minimum": 1,
          "title": "Maximum seats",
          "x-odp-comparison": "numeric"
        }
      }
    },
    "features": {
      "type": "object",
      "title": "Plan features",
      "required": [
        "shared_workspaces",
        "version_history_days",
        "support_level"
      ],
      "additionalProperties": false,
      "properties": {
        "shared_workspaces": {
          "type": "boolean",
          "title": "Shared workspaces"
        },
        "version_history_days": {
          "type": "integer",
          "minimum": 0,
          "title": "Version history retention",
          "x-odp-unit": {
            "code": "d"
          },
          "x-odp-comparison": "numeric"
        },
        "support_level": {
          "type": "string",
          "title": "Support level",
          "enum": [
            "standard",
            "priority"
          ]
        }
      }
    }
  }
}