我正在嘗試使用 SOAP API 從營銷云下載訂閱者，并在幾次迭代后引發以下異常。它不會一直失敗。有時它完成 50 次迭代并失敗，有時它在 5 或 10 次迭代后失敗。這是我用來發出檢索請求的代碼：public List<Subscriber> GetSubscribers(string RequestId = null)    {        string message = string.Empty;        _lstSubscribers = new List<Subscriber>();        SoapClient client = new SoapClient();        client.ClientCredentials.UserName.UserName = _username;        client.ClientCredentials.UserName.Password = _password;        RetrieveRequest retrieveRequest = new RetrieveRequest();        retrieveRequest.ObjectType = "Subscriber";        string[] props = { "Client.ID", "CreatedDate", "EmailAddress", "EmailTypePreference", "ID", "PartnerKey", "SubscriberKey", "UnsubscribedDate" };        retrieveRequest.Properties = props;        retrieveRequest.ClientIDs = new ClientID[] { _clientID };        //retrieveRequest.QueryAllAccounts = true;        //retrieveRequest.QueryAllAccountsSpecified = true;        String requestId = RequestId;         String response = string.Empty;        int tryCount = 0;        try        {            RunRetrieveRequest(client, out requestId, out response, retrieveRequest);        }        catch (Exception ex)        {            if (response == "MoreDataAvailable")            {                tryCount++;                if (tryCount <= 10)                {                }                retrieveRequest.ContinueRequest = requestId;                RunRetrieveRequest(client, out requestId, out response, retrieveRequest);            }        }        return _lstSubscribers;    }這是配置。我嘗試將超時屬性從 30 更改為 59，但這沒有幫助。我將不勝感激任何幫助或建議。提前致謝。