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Call this API to get the details of a single event by event ID.

Request

Basic information

FieldValue
HTTP URLhttps://api.dingtalk.io/v1.0/calendar/users/{userId}/calendars/{calendarId}/events/{eventId}
HTTP MethodGET
Supported app typesappType-Internal app appType-Third-party enterprise app appType-Third-party personal app
Required permissionspermission-Calendar.Event.Read-Read permission for events in the Calendar app

Request headers

NameTypeRequiredDescription
x-acs-dingtalk-access-tokenStringYesThe access credential for calling this API. Obtain it as follows: - For internal apps, call the Obtain the access token of an internal app API. - For third-party enterprise apps, call the Obtain the access token of an enterprise authorized to a third-party app API. - For third-party personal apps, call the Obtain a user token API.

Path parameters

NameTypeRequiredDescription
userIdStringYesThe unionId of the user the event belongs to. - For internal apps and third-party enterprise apps, call the Query user details API to obtain the unionid value. - For third-party personal apps, call the Obtain user profile from Contacts API to obtain the unionId value.
calendarIdStringYesThe ID of the calendar the event belongs to. Set to primary to indicate the user’s primary calendar.
eventIdStringYesThe event ID. Call the Query an event list API to obtain the id value.

Query parameters

NameTypeRequiredDescription
maxAttendeesLongNoThe maximum number of attendees. Default: 100. Maximum: 500.

Request example

HTTP
GET /v1.0/calendar/users/iiiP35sJaxxxxRKgiEiF/calendars/primary/events/cnNTbW1YbUxxxxvdlQrQT09?maxAttendees=100 HTTP/1.1
Host:api.dingtalk.io
x-acs-dingtalk-access-token:dd43888xxx
Content-Type:application/json
Java
// This file is auto-generated, don't edit it. Thanks.
package com.aliyun.sample;

import com.aliyun.tea.*;

public class Sample {

    /**
     * Initialize the account Client using a Token
     * @return Client
     * @throws Exception
     */
    public static com.aliyun.dingtalkcalendar_1_0.Client createClient() throws Exception {
        com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config();
        config.protocol = "https";
        config.regionId = "central";
        return new com.aliyun.dingtalkcalendar_1_0.Client(config);
    }

    public static void main(String[] args_) throws Exception {
        java.util.List<String> args = java.util.Arrays.asList(args_);
        com.aliyun.dingtalkcalendar_1_0.Client client = Sample.createClient();
        com.aliyun.dingtalkcalendar_1_0.models.GetEventHeaders getEventHeaders = new com.aliyun.dingtalkcalendar_1_0.models.GetEventHeaders();
        getEventHeaders.xAcsDingtalkAccessToken = "<your access token>";
        com.aliyun.dingtalkcalendar_1_0.models.GetEventRequest getEventRequest = new com.aliyun.dingtalkcalendar_1_0.models.GetEventRequest()
                .setMaxAttendees(100L);
        try {
            client.getEventWithOptions("iiiP35sJaxxxxRKgiEiF", "primary", "cnNTbW1YbUxxxxvdlQrQT09", getEventRequest, getEventHeaders, new com.aliyun.teautil.models.RuntimeOptions());
        } catch (TeaException err) {
            if (!com.aliyun.teautil.Common.empty(err.code) && !com.aliyun.teautil.Common.empty(err.message)) {
                // err contains code and message properties to help locate the issue
            }

        } catch (Exception _err) {
            TeaException err = new TeaException(_err.getMessage(), _err);
            if (!com.aliyun.teautil.Common.empty(err.code) && !com.aliyun.teautil.Common.empty(err.message)) {
                // err contains code and message properties to help locate the issue
            }

        }        
    }
}
Python
# -*- coding: utf-8 -*-
# This file is auto-generated, don't edit it. Thanks.
import sys

from typing import List

from alibabacloud_dingtalk.calendar_1_0.client import Client as dingtalkcalendar_1_0Client
from alibabacloud_tea_openapi import models as open_api_models
from alibabacloud_dingtalk.calendar_1_0 import models as dingtalkcalendar__1__0_models
from alibabacloud_tea_util import models as util_models
from alibabacloud_tea_util.client import Client as UtilClient

class Sample:
    def __init__(self):
        pass

    @staticmethod
    def create_client() -> dingtalkcalendar_1_0Client:
        """
        Initialize the account Client using a Token
        @return: Client
        @throws Exception
        """
        config = open_api_models.Config()
        config.protocol = 'https'
        config.region_id = 'central'
        return dingtalkcalendar_1_0Client(config)

    @staticmethod
    def main(
        args: List[str],
    ) -> None:
        client = Sample.create_client()
        get_event_headers = dingtalkcalendar__1__0_models.GetEventHeaders()
        get_event_headers.x_acs_dingtalk_access_token = '<your access token>'
        get_event_request = dingtalkcalendar__1__0_models.GetEventRequest(
            max_attendees=100
        )
        try:
            client.get_event_with_options('iiiP35sJaxxxxRKgiEiF', 'primary', 'cnNTbW1YbUxxxxvdlQrQT09', get_event_request, get_event_headers, util_models.RuntimeOptions())
        except Exception as err:
            if not UtilClient.empty(err.code) and not UtilClient.empty(err.message):
                # err contains code and message properties to help locate the issue
                pass

    @staticmethod
    async def main_async(
        args: List[str],
    ) -> None:
        client = Sample.create_client()
        get_event_headers = dingtalkcalendar__1__0_models.GetEventHeaders()
        get_event_headers.x_acs_dingtalk_access_token = '<your access token>'
        get_event_request = dingtalkcalendar__1__0_models.GetEventRequest(
            max_attendees=100
        )
        try:
            await client.get_event_with_options_async('iiiP35sJaxxxxRKgiEiF', 'primary', 'cnNTbW1YbUxxxxvdlQrQT09', get_event_request, get_event_headers, util_models.RuntimeOptions())
        except Exception as err:
            if not UtilClient.empty(err.code) and not UtilClient.empty(err.message):
                # err contains code and message properties to help locate the issue
                pass

if __name__ == '__main__':
    Sample.main(sys.argv[1:])
PHP
<?php

// This file is auto-generated, don't edit it. Thanks.
namespace AlibabaCloud\SDK\Sample;

use AlibabaCloud\SDK\Dingtalk\Vcalendar_1_0\Dingtalk;
use \Exception;
use AlibabaCloud\Tea\Exception\TeaError;
use AlibabaCloud\Tea\Utils\Utils;

use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Dingtalk\Vcalendar_1_0\Models\GetEventHeaders;
use AlibabaCloud\SDK\Dingtalk\Vcalendar_1_0\Models\GetEventRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;

class Sample {

    /**
     * Initialize the account Client using a Token
     * @return Dingtalk Client
     */
    public static function createClient(){
        $config = new Config([]);
        $config->protocol = "https";
        $config->regionId = "central";
        return new Dingtalk($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        $client = self::createClient();
        $getEventHeaders = new GetEventHeaders([]);
        $getEventHeaders->xAcsDingtalkAccessToken = "<your access token>";
        $getEventRequest = new GetEventRequest([
            "maxAttendees" => 100
        ]);
        try {
            $client->getEventWithOptions("iiiP35sJaxxxxRKgiEiF", "primary", "cnNTbW1YbUxxxxvdlQrQT09", $getEventRequest, $getEventHeaders, new RuntimeOptions([]));
        }
        catch (Exception $err) {
            if (!($err instanceof TeaError)) {
                $err = new TeaError([], $err->getMessage(), $err->getCode(), $err);
            }
            if (!Utils::empty_($err->code) && !Utils::empty_($err->message)) {
                // err contains code and message properties to help locate the issue
            }
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
Sample::main(array_slice($argv, 1));
Go
// This file is auto-generated, don't edit it. Thanks.
package main

import (
  "os"
  util  "github.com/alibabacloud-go/tea-utils/v2/service"
  dingtalkcalendar_1_0  "github.com/alibabacloud-go/dingtalk/calendar_1_0"
  openapi  "github.com/alibabacloud-go/darabonba-openapi/v2/client"
  "github.com/alibabacloud-go/tea/tea"
)

/**
 * Initialize the account Client using a Token
 * @return Client
 * @throws Exception
 */
func CreateClient () (_result *dingtalkcalendar_1_0.Client, _err error) {
  config := &openapi.Config{}
  config.Protocol = tea.String("https")
  config.RegionId = tea.String("central")
  _result = &dingtalkcalendar_1_0.Client{}
  _result, _err = dingtalkcalendar_1_0.NewClient(config)
  return _result, _err
}

func _main (args []*string) (_err error) {
  client, _err := CreateClient()
  if _err != nil {
    return _err
  }

  getEventHeaders := &dingtalkcalendar_1_0.GetEventHeaders{}
  getEventHeaders.XAcsDingtalkAccessToken = tea.String("<your access token>")
  getEventRequest := &dingtalkcalendar_1_0.GetEventRequest{
    MaxAttendees: tea.Int64(100),
  }
  tryErr := func()(_e error) {
    defer func() {
      if r := tea.Recover(recover()); r != nil {
        _e = r
      }
    }()
    _, _err = client.GetEventWithOptions(tea.String("iiiP35sJaxxxxRKgiEiF"), tea.String("primary"), tea.String("cnNTbW1YbUxxxxvdlQrQT09"), getEventRequest, getEventHeaders, &util.RuntimeOptions{})
    if _err != nil {
      return _err
    }

    return nil
  }()

  if tryErr != nil {
    var err = &tea.SDKError{}
    if _t, ok := tryErr.(*tea.SDKError); ok {
      err = _t
    } else {
      err.Message = tea.String(tryErr.Error())
    }
    if !tea.BoolValue(util.Empty(err.Code)) && !tea.BoolValue(util.Empty(err.Message)) {
      // err contains code and message properties to help locate the issue
    }

  }
  return _err
}

func main() {
  err := _main(tea.StringSlice(os.Args[1:]))
  if err != nil {
    panic(err)
  }
}
Node.js
// This file is auto-generated, don't edit it
import Util, * as $Util from '@alicloud/tea-util';
import dingtalkcalendar_1_0, * as $dingtalkcalendar_1_0 from '@alicloud/dingtalk/calendar_1_0';
import OpenApi, * as $OpenApi from '@alicloud/openapi-client';
import * as $tea from '@alicloud/tea-typescript';

export default class Client {

  /**
   * Initialize the account Client using a Token
   * @return Client
   * @throws Exception
   */
  static createClient(): dingtalkcalendar_1_0 {
    let config = new $OpenApi.Config({ });
    config.protocol = "https";
    config.regionId = "central";
    return new dingtalkcalendar_1_0(config);
  }

  static async main(args: string[]): Promise<void> {
    let client = Client.createClient();
    let getEventHeaders = new $dingtalkcalendar_1_0.GetEventHeaders({ });
    getEventHeaders.xAcsDingtalkAccessToken = "<your access token>";
    let getEventRequest = new $dingtalkcalendar_1_0.GetEventRequest({
      maxAttendees: 100,
    });
    try {
      await client.getEventWithOptions("iiiP35sJaxxxxRKgiEiF", "primary", "cnNTbW1YbUxxxxvdlQrQT09", getEventRequest, getEventHeaders, new $Util.RuntimeOptions({ }));
    } catch (err) {
      if (!Util.empty(err.code) && !Util.empty(err.message)) {
        // err contains code and message properties to help locate the issue
      }

    }    
  }

}

Client.main(process.argv.slice(2));
C#
// This file is auto-generated, don't edit it. Thanks.

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;

using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample 
    {

        /**
         * Initialize the account Client using a Token
         * @return Client
         * @throws Exception
         */
        public static AlibabaCloud.SDK.Dingtalkcalendar_1_0.Client CreateClient()
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config();
            config.Protocol = "https";
            config.RegionId = "central";
            return new AlibabaCloud.SDK.Dingtalkcalendar_1_0.Client(config);
        }

        public static void Main(string[] args)
        {
            AlibabaCloud.SDK.Dingtalkcalendar_1_0.Client client = CreateClient();
            AlibabaCloud.SDK.Dingtalkcalendar_1_0.Models.GetEventHeaders getEventHeaders = new AlibabaCloud.SDK.Dingtalkcalendar_1_0.Models.GetEventHeaders();
            getEventHeaders.XAcsDingtalkAccessToken = "<your access token>";
            AlibabaCloud.SDK.Dingtalkcalendar_1_0.Models.GetEventRequest getEventRequest = new AlibabaCloud.SDK.Dingtalkcalendar_1_0.Models.GetEventRequest
            {
                MaxAttendees = 100,
            };
            try
            {
                client.GetEventWithOptions("iiiP35sJaxxxxRKgiEiF", "primary", "cnNTbW1YbUxxxxvdlQrQT09", getEventRequest, getEventHeaders, new AlibabaCloud.TeaUtil.Models.RuntimeOptions());
            }
            catch (TeaException err)
            {
                if (!AlibabaCloud.TeaUtil.Common.Empty(err.Code) && !AlibabaCloud.TeaUtil.Common.Empty(err.Message))
                {
                    // err contains code and message properties to help locate the issue
                }
            }
            catch (Exception _err)
            {
                TeaException err = new TeaException(new Dictionary<string, object>
                {
                    { "message", _err.Message }
                });
                if (!AlibabaCloud.TeaUtil.Common.Empty(err.Code) && !AlibabaCloud.TeaUtil.Common.Empty(err.Message))
                {
                    // err contains code and message properties to help locate the issue
                }
            }
        }

    }
}
python2
# -*- coding: utf-8 -*-
# This file is auto-generated, don't edit it. Thanks.
from __future__ import unicode_literals

import sys

from alibabacloud_dingtalkcalendar_1_0.client import Client as dingtalkcalendar_1_0Client
from alibabacloud_tea_openapi import models as open_api_models
from alibabacloud_dingtalkcalendar_1_0 import models as dingtalkcalendar__1__0_models
from alibabacloud_tea_util import models as util_models
from alibabacloud_tea_util.client import Client as UtilClient

class Sample(object):
    def __init__(self):
        pass

    @staticmethod
    def create_client():
        """
        Initialize the account Client using a Token

        @return: Client
        @throws Exception
        """
        config = open_api_models.Config()
        config.protocol = 'https'
        config.region_id = 'central'
        return dingtalkcalendar_1_0Client(config)

    @staticmethod
    def main(args):
        client = Sample.create_client()
        get_event_headers = dingtalkcalendar__1__0_models.GetEventHeaders()
        get_event_headers.x_acs_dingtalk_access_token = '<your access token>'
        get_event_request = dingtalkcalendar__1__0_models.GetEventRequest(
            max_attendees=100
        )
        try:
            client.get_event_with_options('iiiP35sJaxxxxRKgiEiF', 'primary', 'cnNTbW1YbUxxxxvdlQrQT09', get_event_request, get_event_headers, util_models.RuntimeOptions())
        except Exception as err:
            if not UtilClient.empty(err.code) and not UtilClient.empty(err.message):
                # err contains code and message properties to help locate the issue
                pass

if __name__ == '__main__':
    Sample.main(sys.argv[1:])
Swift
#!/usr/bin/env xcrun swift

import Cocoa
import Foundation
import Tea
import TeaUtils
import AlibabacloudDingtalkcalendar10
import AlibabacloudOpenApi

open class Client {
    public static func createClient() throws -> AlibabacloudDingtalkcalendar10.Client {
        var config: AlibabacloudOpenApi.Config = AlibabacloudOpenApi.Config([:])
        config.protocol_ = "https"
        config.regionId = "central"
        return AlibabacloudDingtalkcalendar10.Client(config)
    }

    @available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)
    public static func main(_ args: [String]?) async throws -> Void {
        var client: AlibabacloudDingtalkcalendar10.Client = try Client.createClient()
        var getEventHeaders: AlibabacloudDingtalkcalendar10.GetEventHeaders = AlibabacloudDingtalkcalendar10.GetEventHeaders([:])
        getEventHeaders.xAcsDingtalkAccessToken = "<your access token>"
        var getEventRequest: AlibabacloudDingtalkcalendar10.GetEventRequest = AlibabacloudDingtalkcalendar10.GetEventRequest([
            "maxAttendees": 100
        ])
        do {
            try await client.getEventWithOptions("iiiP35sJaxxxxRKgiEiF", "primary", "cnNTbW1YbUxxxxvdlQrQT09", getEventRequest as! AlibabacloudDingtalkcalendar10.GetEventRequest, getEventHeaders as! AlibabacloudDingtalkcalendar10.GetEventHeaders, TeaUtils.RuntimeOptions([:]))
        }
        catch {
            if error is Tea.TeaError {
                var err = error as! Tea.TeaError
                if (!TeaUtils.Client.empty(err.code) && !TeaUtils.Client.empty(err.message)) {
                }
            } else {
                throw error
            }
        }
    }
}

Client.main(CommandLine.arguments)

Response

Response body

NameTypeDescription
idStringThe event ID.
summaryStringThe event title.
descriptionStringThe event description.
statusStringThe event status. - confirmed: Normal - cancelled: Canceled
startObjectThe event start time.
dateStringThe event start date in yyyy-MM-dd format. - Required for all-day events - Must be empty for non-all-day events
dateTimeStringThe event start time in ISO-8601 date-time format. - Must be empty for all-day events - Required for non-all-day events
timeZoneStringThe time zone of the event start time, in TZ database name format. - Must be empty for all-day events - Required for non-all-day events
originStartObjectThe originally created start time in a recurrence series. Not returned for regular single events.
dateTimeStringThe date and time information, expressed in ISO 8601 format and always in UTC. For example: Midnight UTC on January 1, 2023 is 2023-01-01T00:00:00Z.
endObjectThe event end time.
dateStringThe event end date in yyyy-MM-dd format. - Required for all-day events - Must be empty for non-all-day events
dateTimeStringThe event end time in ISO-8601 date-time format. - Must be empty for all-day events - Required for non-all-day events
timeZoneStringThe time zone of the event end time. Must be the same as the time zone of the start time, in TZ database name format. - Must be empty for all-day events - Required for non-all-day events
isAllDayBooleanWhether the event is an all-day event. - true: Yes - false: No
recurrenceObjectThe event recurrence rule.
patternObjectThe recurrence pattern.
typeStringThe recurrence rule type. - daily: Repeats every interval days - weekly: Repeats every interval weeks on daysOfWeek - absoluteMonthly: Repeats on dayOfMonth every interval months - relativeMonthly: Repeats on daysOfWeek of the index week every interval months - absoluteYearly: Repeats every interval years
dayOfMonthIntegerWhen type=absoluteMonthly, specifies the day of the month.
daysOfWeekStringThe day of the week, specified in lowercase English. Use commas to separate multiple values.
indexStringWhen type=relativeMonthly, specifies which week of the month. - first - second - third - fourth - last last indicates the last week of the month.
intervalIntegerThe recurrence interval. The unit varies by type. For example, when type=daily, it indicates an interval of N days; when type=absoluteYearly, it indicates an interval of N years.
firstDayOfWeekStringThe first day of the week. Valid values: sunday, monday, tuesday, wednesday, thursday, friday, saturday. Default: sunday.
rangeObjectThe recurrence range.
typeStringThe recurrence range type. - noEnd: Never ends - endDate: Recurs until a specified date - numbered: Recurs a specified number of times
endDateStringThe recurrence end time.
numberOfOccurrencesIntegerThe number of recurrences.
attendeesArrayThe list of attendees.
idStringThe user’s unionId.
displayNameStringThe user name.
responseStatusStringThe reply status.
selfBooleanWhether this is the currently signed-in user. - true: Yes - false: No
isOptionalBooleanWhether this is an optional attendee. - true: Yes - false: No
organizerObjectThe organizer.
idStringThe organizer’s unionId.
displayNameStringThe user name.
responseStatusStringThe reply status.
selfBooleanWhether this is the currently signed-in user. - true: Yes - false: No
locationObjectInformation about the event location.
displayNameStringThe event location name.
seriesMasterIdStringThe master event ID of a recurring event. Empty for non-recurring events.
createTimeStringThe created time.
updateTimeStringThe update time.
remindersArrayThe event reminders.
methodStringThe reminder method.
minutesStringSend a reminder N minutes before the event starts.
onlineMeetingInfoObjectThe online meeting.
typeStringThe online meeting type. Currently supported: - dingtalk: DingTalk Video Meeting
conferenceIdStringThe meeting ID.
urlStringThe URL to join the meeting.
extraInfoMapAdditional extended information.
extendedPropertiesObjectThe event extended attributes.
sharedPropertiesObjectThe shared attributes.
sourceOpenCidStringWhen the event is initiated from a group, this field indicates the source group of the event.
belongCorpIdStringThe organization ID (corpId) that the event belongs to.
meetingRoomsArrayThe meeting rooms.
roomIdStringThe roomId of the meeting room.
responseStatusStringThe response status of the meeting room. - accepted: Accepted - tentative: Under approval - declined: Approval rejected
displayNameStringThe meeting room name.
categoriesArrayThe event categories.
displayNameStringThe event category name.
richTextDescriptionObjectThe Rich Text description.
textStringThe Rich Text description content.

Response body example

HTTP/1.1 200 OK
Content-Type:application/json

{
  "id" : "iiiP35sJxxxxPRKgiEiF",
  "summary" : "test event",
  "description" : "something about this event",
  "status" : "confirmed",
  "start" : {
    "date" : "2020-01-01",
    "dateTime" : "2020-01-01T10:15:30+08:00",
    "timeZone" : "Asia/Shanghai"
  },
  "originStart" : {
    "dateTime" : "2023-01-01T00:00:00Z"
  },
  "end" : {
    "date" : "2020-01-01",
    "dateTime" : "2020-01-01T10:15:30+08:00",
    "timeZone" : "Asia/Shanghai"
  },
  "isAllDay" : false,
  "recurrence" : {
    "pattern" : {
      "type" : "daily",
      "dayOfMonth" : 14,
      "daysOfWeek" : "monday",
      "index" : "first",
      "interval" : 1
    },
    "range" : {
      "type" : "noEnd",
      "endDate" : "2020-01-01T10:15:30+08:00",
      "numberOfOccurrences" : 5
    }
  },
  "attendees" : [ {
    "id" : "iiiP35sJxxxxPRKgiEiF",
    "displayName" : "jack",
    "responseStatus" : "accepted",
    "self" : false,
    "isOptional" : false
  } ],
  "organizer" : {
    "id" : "iiiP35sJxxxxPRKgiEiF",
    "displayName" : "tony",
    "responseStatus" : "accepted",
    "self" : false
  },
  "location" : {
    "displayName" : "room 1-2-3",
    "meetingRooms" : [ "Meeting Room" ]
  },
  "seriesMasterId" : "cnNTbW1YbxxxxvdlQrQT09",
  "createTime" : "2020-01-01T10:15:30+08:00",
  "updateTime" : "2020-01-01T10:15:30+08:00",
  "reminders" : [ {
    "method" : "dingtalk",
    "minutes" : "15"
  } ],
  "onlineMeetingInfo" : {
    "type" : "dingtalk",
    "conferenceId" : "5c4df21d-xxxx-a6db402b9f3a",
    "url" : "dingtalk://dingtalkclient/page/videoxxxxalendar?confId=5c4df21d-xxxx9f3f&calendarId=127xxxx124"
  },
  "extendedProperties" : {
    "sharedProperties" : {
      "sourceOpenCid" : "zxcvasdfvb123====",
      "belongCorpId" : "dingd*****1231231"
    }
  },
  "meetingRooms" : [ {
    "roomId" : "c10315a8b4e740a317813ab6fxxxxxx",
    "responseStatus" : "accepted",
    "displayName" : "Meeting Room 1"
  } ],
  "categories" : [ {
    "displayName" : "Weekly Meeting"
  } ]
}

Error codes

If the API call returns an error, look up the solution in the Global error codes document based on the error message.
HttpCodeError codeError messageDescription
400invalidParameterforwardErrorMessageInvalid parameter
404instanceNotExistinstance not existThe recurring event instance does not exist
404itemNotFoundforwardErrorMessageThe specified event cannot be found