{ "$schema":                              "https://json-schema.org/draft/2020-12/schema",
  "$id":                                  "https://schemas.mpai.community/OSD/V1.5/data/Basic3DModelSceneGeometry.json",
  "title":                                "Basic 3D Model Scene Geometry V1.5", 
  "type":                                 "object", 
  "additionalProperties":                 false,
  "required":                           [ "Header", "Basic3DModelSceneGeometryID", "Basic3DModelSceneGeometrySpaceTime",
                                          "3DModelObjectCount", "3DModelObjects" ], 
  "properties": {

    "Header":                             { "type": "string", "pattern": "^OSD-B3G-V[0-9]{1,2}[.][0-9]{1,2}$" },
    "MInstanceID":                        { "type": "string" },
    "UEnvironmentID":                     { "type": "string" },
    "Basic3DModelSceneGeometryID":        { "type": "string" },
    "Basic3DModelSceneGeometrySpaceTime": { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },

    "3DModelObjectCount":                 { "type": "integer", "minimum": 0 },
    "3DModelObjects":                     { "type": "array", "minItems": 0, "items": { "type": "object", "additionalProperties": false,
                                            "required": [ "3DModelObjectSpaceTime", "3DModelObjectQualifier" ], "properties": {
      "3DModelObjectSpaceTime":           { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
      "3DModelObjectQualifier":           { "$ref": "https://schemas.mpai.community/TFA/V1.5/data/3DModelQualifier.json" } } } },

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