TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
RefundNegotiateCanapplyRequest req = new RefundNegotiateCanapplyRequest();
req.setRefundId(112233L);
RefundNegotiateCanapplyResponse rsp = client.execute(req, sessionKey);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
RefundNegotiateCanapplyRequest req = new RefundNegotiateCanapplyRequest();
req.RefundId = 112233L;
RefundNegotiateCanapplyResponse rsp = client.Execute(req, sessionKey);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new RefundNegotiateCanapplyRequest;
$req->setRefundId("112233");
$resp = $c->execute($req, $sessionKey);

curl -X POST 'http://gw.api.taobao.com/router/rest' \
-H 'Content-Type:application/x-www-form-urlencoded;charset=utf-8' \
-d 'app_key=12129701' \
-d 'format=json' \
-d 'method=taobao.refund.negotiate.canapply' \
-d 'partner_id=apidoc' \
-d 'session=62612a08-bb93-4e91-b526-11adfc43f202' \
-d 'sign=B8B4AC40EE8239D2DD5E5D2B4C225CAC' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-09-15+13%3A54%3A19' \
-d 'v=2.0' \
-d 'refund_id=112233'

# -*- coding: utf-8 -*-
import top.api

req=top.api.RefundNegotiateCanapplyRequest(url,port)
req.set_app_info(top.appinfo(appkey,secret))

req.refund_id=112233
try:
	resp= req.getResponse(sessionkey)
	print(resp)
except Exception,e:
	print(e)

pTopRequest pRequest = alloc_top_request();
pTopResponse pResponse = NULL;
pTaobaoClient pClient = alloc_taobao_client(url, appkey, appsecret);
set_api_name(pRequest,"taobao.refund.negotiate.canapply");
add_param(pRequest,"refund_id","112233");
pResponse = top_execute(pClient,pRequest,sessionKey);
printf("ret code:%d\n",pResponse->code);
if(pResponse->code == 0){
	pTopResponseIterator ite = init_response_iterator(pResponse);
	pResultItem pResultItem = alloc_result_item();
	while(parseNext(ite, pResultItem) == 0){
		printf("%s:%s\n",pResultItem->key,pResultItem->value);
	}
	destroy_response_iterator(ite);
	destroy_result_item(pResultItem);
}
destroy_top_request(pRequest);
destroy_top_response(pResponse);
destroy_taobao_client(pClient);

TopClient = require('./topClient').TopClient;
var client = new TopClient({
	'appkey': 'appkey',
	'appsecret': 'secret',
	'REST_URL': 'http://gw.api.taobao.com/router/rest'
});

client.execute('taobao.refund.negotiate.canapply', {
	'refund_id':'112233'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<refund_negotiate_canapply_response>
    <can_apply>true</can_apply>
    <negotiate_types>
        <negotiation_type>
            <negotiate_code>1</negotiate_code>
            <negotiate_desc>退款原因协商</negotiate_desc>
        </negotiation_type>
    </negotiate_types>
</refund_negotiate_canapply_response>

{
    "refund_negotiate_canapply_response":{
        "can_apply":true,
        "negotiate_types":{
            "negotiation_type":[
                {
                    "negotiate_code":1,
                    "negotiate_desc":"退款原因协商"
                }
            ]
        }
    }
}

<error_response>
    <code>50</code>
    <msg>Remote service error</msg>
    <sub_code>isv.invalid-parameter</sub_code>
    <sub_msg>非法参数</sub_msg>
</error_response>

{
	"error_response":{
		"msg":"Remote service error",
		"code":50,
		"sub_msg":"非法参数",
		"sub_code":"isv.invalid-parameter"
	}
}