{
  "$id":                          "https://schemas.mpai.community/TFA/V1.5/data/GNSSQualifier.json",
  "$schema":                      "https://json-schema.org/draft/2020-12/schema",

  "title":                        "GNSS Qualifier V1.5", 
                                  "description": "Qualifier describing the structure, content format, subtype and attributes of GNSS data.",
                                  "type": "object", "required": [ "Header", "GNSSQualifierID", "SubType", "Format", "Trace" ], 
                                  "additionalProperties": false, "properties": {

    "Header":                     { "type": "string", "pattern": "^TFA-GNQ-V[0-9]{1,2}[.][0-9]{1,2}$" },

    "GNSSQualifierID":            { "type": "string" },

    "SubType":                    { "type": "object", "additionalProperties": false },

    "Format":                     { "type": "object", "additionalProperties": false, "properties": {

      "ContentFormat":            { "$ref": "https://schemas.mpai.community/TFA/V1.5/formats/GNSSContentFormats.json" } } },

    "Attributes":                 { "type": "object", "additionalProperties": false },

    "DataExchangeMetadata":     { "$ref": "https://schemas.mpai.community/AIF/V3.0/data/DataExchangeMetadata.json" },
    "Trace":                      { "$ref": "https://schemas.mpai.community/AIF/V3.0/data/Trace.json" },
    "DescrMetadata":              { "type": "string", "maxLength": 2048 } } }