No postal code in Azure Maps search results

Hi

We are using Azure Maps to search addresses and get their geocoding but in some cases, the Azure Maps API results do not return the postal code of the address. Why ?

For example, when I search the address "route d'apremont, vineuil" with this URL :

https://atlas.microsoft.com/search/fuzzy/json?subscription-key=...&api-version=1.0&query=route d'apremont, vineuil&typeahead=true&limit=5&countrySet=FR&language=fr-FR&extendedPostalCodesFor=PAD,Str,Addr,Geo,POI,XStr&idxSet=PAD,Str

I get the following results :

{
    "summary": {
        "query": "route d apremont vineuil",
        "queryType": "NON_NEAR",
        "queryTime": 6,
        "numResults": 2,
        "offset": 0,
        "totalResults": 2,
        "fuzzyLevel": 1
    },
    "results": [
        {
            "type": "Street",
            "id": "FR/STR/p0/2634039",
            "score": 8.7185869217,
            "address": {
                "streetName": "Route d'Apremont",
                "municipality": "Vineuil-Saint-Firmin",
                "countrySecondarySubdivision": "Oise",
                "countrySubdivision": "Hauts-de-France",
                "countryCode": "FR",
                "country": "France",
                "countryCodeISO3": "FRA",
                "freeformAddress": "Route d'Apremont, Vineuil-Saint-Firmin",
                "localName": "Vineuil-Saint-Firmin"
            },
            "position": {
                "lat": 49.20664,
                "lon": 2.49526
            },
            "viewport": {
                "topLeftPoint": {
                    "lat": 49.21119,
                    "lon": 2.49403
                },
                "btmRightPoint": {
                    "lat": 49.20361,
                    "lon": 2.50088
                }
            }
        },
        {
            "type": "Street",
            "id": "FR/STR/p0/2635131",
            "score": 8.6322641373,
            "address": {
                "streetName": "Chemin d'Apremont",
                "municipality": "Vineuil-Saint-Firmin",
                "countrySecondarySubdivision": "Oise",
                "countrySubdivision": "Hauts-de-France",
                "postalCode": "60500",
                "countryCode": "FR",
                "country": "France",
                "countryCodeISO3": "FRA",
                "freeformAddress": "Chemin d'Apremont, Vineuil-Saint-Firmin, 60500",
                "localName": "Vineuil-Saint-Firmin"
            },
            "position": {
                "lat": 49.20226,
                "lon": 2.48701
            },
            "viewport": {
                "topLeftPoint": {
                    "lat": 49.20262,
                    "lon": 2.4864
                },
                "btmRightPoint": {
                    "lat": 49.20182,
                    "lon": 2.48767
                }
            }
        }
    ]
}

As you can see, maps found 2 streets. The second result has a postal code but not the first one, while both results are in the same city...