{
  "$id": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/message/group.schema.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Group",
  "description": "Represents a message envelope for grouping related assets together.",
  "type": "object",
  "properties": {
    "asset_set": {
      "type": "array",
      "description": "An array of assets that are grouped together with the primary header asset.",
      "minItems": 1,
      "items": {
        "$ref": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/data/asset.schema.json"
      }
    },
    "relation_kind": {
      "type": "string",
      "description": "The kind of relation between the primary asset and the linked asset (for example, MERGES, RELATES, SELF, SPLITS).",
      "enum": ["MERGES", "RELATES", "SELF", "SPLITS"]
    }
  },
  "allOf": [
    {
      "$ref": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/data/header.schema.json"
    }
  ],
  "required": ["asset_set", "relation_kind"]
}