{
    "key": "ref:mastr",
    "type": "identifier",
    "label": "MaStR Number",
    "urlFormat": "https://www.marktstammdatenregister.de/MaStR/suche/{value}",
    "pattern": "^SEE9\\d{11}(;SEE9\\d{11})*$",
    "locationSet": {
        "include": [
            "DE"
        ]
    },
    "terms": [
        "marktstammdatenregister"
    ]
}