android设备到设备推送通知响应200而不是201

我正在尝试使用改型发送推送通知。我收到了回复200，但我想我需要201来完成这个过程。我不知道我做错了什么

API接口

public interface APIService {
    @Headers(
            {
                    "Content-Type:application/json",
                    "Authorization:key=AAAAx9xPkRc:APA91bF5I5RXfNqUSQ_6YQb4Iyj5CMUrMMr4OZ0t3RMMEV5d532LlndjBT-all7elYPewv5_fSlco-n8rLa8Mhei3Or-MycCf509v4V92SPk_JOWUJd7UizJFg8etR3Z99B3"
            }
    )

    @POST("fcm/send")
    Call<MyResponse> sendNotification(@Body Sender body);

    class Client {

        private static Retrofit retrofit = null;

        public static Retrofit getClient(String url){
            if (retrofit == null){
                retrofit = new Retrofit.Builder()
                        .baseUrl(url)
                        .addConverterFactory(GsonConverterFactory.create())
                        .build();
            }
            return retrofit;
        }
    }


}

public class MyResponse {

    public int success;
}

MyResponse

public interface APIService {
    @Headers(
            {
                    "Content-Type:application/json",
                    "Authorization:key=AAAAx9xPkRc:APA91bF5I5RXfNqUSQ_6YQb4Iyj5CMUrMMr4OZ0t3RMMEV5d532LlndjBT-all7elYPewv5_fSlco-n8rLa8Mhei3Or-MycCf509v4V92SPk_JOWUJd7UizJFg8etR3Z99B3"
            }
    )

    @POST("fcm/send")
    Call<MyResponse> sendNotification(@Body Sender body);

    class Client {

        private static Retrofit retrofit = null;

        public static Retrofit getClient(String url){
            if (retrofit == null){
                retrofit = new Retrofit.Builder()
                        .baseUrl(url)
                        .addConverterFactory(GsonConverterFactory.create())
                        .build();
            }
            return retrofit;
        }
    }


}

public class MyResponse {

    public int success;
}

发送类

public class Sender {
    public DATAS data;
    public String to;

    public Sender(DATAS data, String to) {
        this.data = data;
        this.to = to;
    }
}

调用该方法

apiService = APIService.Client.getClient("https://fcm.googleapis.com/").create(APIService.class);
DATAS data = new DATAS("mizbah", "otpCode", "number", "userid");

        Sender sender = new Sender(data, token);
        apiService.sendNotification(sender)
                .enqueue(new Callback<MyResponse>() {
                    @Override
                    public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
                        if (response.code() == 200) {

                            if (response.body().success != 1) {
                                progress.dismiss();
                                Toast.makeText(context, response.body().success+"x", Toast.LENGTH_LONG).show();
                            } else {
                                confirmMessage(progress,context);

                            }
                        } else {
                            progress.dismiss();
                            Toast.makeText(context, "Error", Toast.LENGTH_SHORT).show();
                        }
                    }

                    @Override
                    public void onFailure(Call<MyResponse> call, Throwable t) {
                        progress.dismiss();
                        Toast.makeText(context, "2. সাময়িক সমস্যার জন্য দুঃখিত। অনুগ্রহ করে একটু পর আবার চেষ্টা করুন। ধন্যবাদ", Toast.LENGTH_SHORT).show();
                    }
                });

apiService=apiService.Client.getClient（“https://fcm.googleapis.com/）创建（APIService.class）；
数据数据=新数据（“mizbah”、“otpCode”、“number”、“userid”）；
发送方=新发送方（数据、令牌）；
apiService.sendNotification（发件人）
.enqueue（新的回调函数（）{
@凌驾
公共void onResponse（调用、响应）{
if（response.code（）==200）{
if（response.body（）.success！=1）{
进步。解散（）；
Toast.makeText（context，response.body（）.success+“x”，Toast.LENGTH_LONG.show（）；
}否则{
确认消息（进度、上下文）；
}
}否则{
进步。解散（）；
Toast.makeText（上下文，“错误”，Toast.LENGTH_SHORT）.show（）；
}
}
@凌驾
失败时公共无效（调用调用，可丢弃的t）{
进步。解散（）；
Toast.makeText（上下文，“2。সাময়িক সমস্যার জন্য দুঃখিত। অনুগ্রহ করে একটু পর আবার চেষ্টা করুন। ধন্যবাদ", 吐司。长度（短）。show（）；
}
});

此方法工作正常，返回200，这意味着它可以与firebase通信，但要成功通知，我需要201作为回报。我找不到我的错误。正在寻求帮助。提前感谢