Convert Lead to Deal API Request does not insert URL

Convert Lead to Deal API Request does not insert URL

Hello,

I'm making a request to convert a lead into a deal. The request works well, but the URL I'm passing does not get inserted into the CRM. All the data gets inserted expect of "Link_zum_Kundenvorgang". I proofed the API name and there is no issue with it.

API URL: 
https://{{API_URL}}/crm/v2/Leads/530665000001900492/actions/convert

Request body:
{ "data":[ { "Deals":{ "Deal_Name":"AUDI A7", "Stage":"Zustandsbericht ohne Fotos erhalten", "Pipeline":"Einkaufsprozess", "Link_zum_Kundenvorgang":"https://dummy.de/dummy/?uuid=964c474a-2895-46b4-ae5c-2f33899effd4&utm_nooverride=1&_ga=686709276.1682580339" } } ] }

Response:
[
    {
        "body": {
            "data": [
                {
                    "Contacts": "530665000001902429",
                    "Deals": "530665000001902432",
                    "Accounts": null
                }
            ]
        },
        "headers": {
            "server": "ZGS",
            "date": "Wed, 17 May 2023 09:27:59 GMT",
            "content-type": "application/json;charset=UTF-8",
            "content-length": "89",
            "connection": "close",
            "set-cookie": [
                "4993755637=492918c8f1ac4bcf33c9c841a016cbb4; Path=/",
                "crmcsr=5e4099cf-2a8f-4145-97f5-5a0ea1224fcc;path=/;SameSite=None;Secure;priority=high",
                "_zcsr_tmp=5e4099cf-2a8f-4145-97f5-5a0ea1224fcc;path=/;SameSite=Strict;Secure;priority=high"
            ],
            "referrer-policy": "strict-origin",
            "x-content-type-options": "nosniff",
            "x-xss-protection": "1; mode=block",
            "cache-control": "no-store, no-cache, must-revalidate, private",
            "pragma": "no-cache",
            "expires": "Thu, 01 Jan 1970 00:00:00 GMT",
            "x-frame-options": "SAMEORIGIN",
            "x-accesstoken-reset": "2023-05-17T11:50:40+02:00",
            "clientversion": "6421572",
            "clientsubversion": "cfa9d7518a77f148185a17bc866966a7",
            "content-disposition": "attachment; filename=response.json",
            "content-language": "en-US",
            "strict-transport-security": "max-age=63072000"
        },
        "statusCode": 200
    }
]