Clan Callsign can't be updated

I couldn't find evidence of other users experiencing this 🤷‍♂️

No matter what I try setting callsign to, the system says it "may contain inappropriate content."

fetch("https://www.bungie.net/Platform/GroupV2/3760691/Edit/?lc=en&fmt=true&lcin=true&&", {
  "headers": {
    "accept": "*/*",
    "accept-language": "en-AU,en-US;q=0.9,en;q=0.8",
    "content-type": "text/plain;charset=UTF-8",
    "priority": "u=1, i",
    "sec-ch-ua": "\"Microsoft Edge\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
    "sec-ch-ua-mobile": "?0",
    "sec-ch-ua-platform": "\"Windows\"",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "same-origin",
    "x-api-key": "10E792629C2A47E19356B8A79EEFA640",
    "x-csrf": "33438833619853306"
  },
  "referrer": "https://www.bungie.net/7/en/Clan/CultureFields/3760691",
  "referrerPolicy": "strict-origin-when-cross-origin",
  "body": JSON.stringify({
    "callsign": "1"
}),
  "method": "POST",
  "mode": "cors",
  "credentials": "include"
});

{
    "Response": 0,
    "ErrorCode": 755,
    "ThrottleSeconds": 0,
    "ErrorStatus": "ClanFieldContainsInappropriateContent",
    "Message": "The field \"Callsign\" may contain inappropriate content. Please refer to our Code of Conduct and Terms of Use.",
    "MessageData": {
        "ClanFieldName": "Callsign"
    }
}

Bungie-net / api

Clan Callsign can't be updated #1889