{ "$schema":                  "https://json-schema.org/draft/2020-12/schema",
  "$id":                      "https://schemas.mpai.community/OSD/V1.5/data/BasicTextObject.json",
  "title":                    "Basic Text Object V1.5", 
  "type":                     "object", 
  "required":                 ["Header", "BasicTextObjectID" ], 
  "additionalProperties":     false, 
  "properties":               {

    "Header":                 { "type": "string", "pattern": "^OSD-BTO-V[0-9]{1,2}[.][0-9]{1,2}$" },
    "MInstanceID":            { "type": "string" },
    "BasicTextObjectID":      { "type": "string" },

    "BasicTextData":          { "type": "array", "minItems": 0, "items": { "oneOf": [
                              { "type": "object", "required": ["Data"], "additionalProperties": false, "properties": {
      "Data":                 { "type": "string" } } },
                              { "type": "object", "required": ["Length", "DataURI"], "additionalProperties": false, "properties": {
      "Length":               { "type": "integer", "minimum": 0 },
      "DataURI":              { "type": "string", "format": "uri" } } },
                              { "type": "object", "required": ["ID"], "additionalProperties": false, "properties": {
      "ID":                   { "type": "string" } } } ] } },

    "TextQualifier":          { "$ref": "https://schemas.mpai.community/TFA/V1.5/data/TextQualifier.json" },
    
    "DataXMData":             { "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json" },
    "DescrMetadata":          { "type": "string", "maxLength": 2048 } } }