curl --location --request POST 'https://qyapi.weixin.qq.com/cgi-bin/corpgroup/unionid_to_external_userid?access_token=ACCESS_TOKEN' \
--header 'Content-Type: application/json' \
--data-raw '{
"unionid":"xxxxx",
"openid":"xxxxx",
"corpid":"xxxxx"
}'
{
"errcode": 0,
"errmsg": "ok",
"external_userid_info": [
{
"corpid": "AAAAA",
"external_userid": "BBBB"
},
{
"corpid": "CCCCC",
"external_userid": "DDDDD"
}
]
}