{ "$schema":                "https://json-schema.org/draft/2020-12/schema",
  "$id":                    "https://schemas.mpai.community/MMM4/V2.2/data/RItem.json",
  "title":                  "R-Item V2.2",
  "type":                   "object",
  "required":               [ "Header", "MInstanceID", "RItemID" ],
  "additionalProperties":   false,
  "properties":             {

    "Header":               { "type": "string", "pattern": "^MMM-RIT-V[0-9],{1,2},[.][0-9],{1,2}$" },
    "MInstanceID":          { "type": "string" },
    "MEnvironmentID":       { "type": "string" },
    "RItemID":              { "type": "string" },
    "RItemTime":            { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },

    "RItemType":            { "type": "string", "enum": [ "R-Object", "S-Object", "M-Object" ] },

    "Rights":               { "type": "array", "minItems": 1, "items": { "oneOf": [
                            { "type": "object", "additionalProperties": false, "required": [ "Right" ], "properties": {
      "Right":              { "$ref": "https://schemas.mpai.community/MMM4/V2.2/data/Right.json" } } },
                            { "type": "object", "additionalProperties": false, "required": [ "RightID" ], "properties": {
      "RightID":            { "type": "string" } } } ] } },

    "DataXMData":           { "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json" },
    "DescrMetadata":        { "type": "string", "maxLength": 2048 } } }