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Feature Overview
This API is used to send one-to-one messages to multiple users (up to 500) at a time.
Compared with the API for sending one-to-one messages to one user, this API is more suitable for time-sensitive messages, such as marketing messages and system notifications.
If you don’t want to count messages as unread or store them, you can set MsgLifeTime to 1. This will make message delivery faster.
When the admin specifies an account to send a message to multiple target accounts, the sender displayed to the recipients is not the admin, but the account specified by the admin.
This API does not trigger callback requests.
This API does not check whether the sender and the recipients are friends or blocklisted by either party or whether the senders are muted.
This API does not check whether the recipient has muted notifications for messages from the sender by default. If needed, enter WithMuteNotifications in the SendMsgControl parameter.
For one-to-one messages, the MsgSeq field is specified by the user when the message is sent. Its value can be repeated. It is not generated by the backend and not globally unique. For group chat messages, the value of the MsgSeq field is generated by the backend, and each group maintains its respective MsgSeq which increases strictly from 1. For one-to-one messages, the historical messages of the same conversation are sorted by timestamp first, and then the historical messages of the same second are sorted by MsgSeq.
Note：
When calling this API to batch send a message, you must specify whether to synchronize the message to the sender, which is the admin account or the account specified by the admin. Synchronization can be implemented via online terminals and roaming servers. This API provides the SyncOtherMachine parameter to determine whether to synchronize the message. For more information, please see Sample request below.
API Calling Description
Sample request URL
https://xxxxxx/v4/openim/batchsendmsg?sdkappid=88888888&identifier=admin&usersig=xxx&random=99999999&contenttype=json
Request parameters
The following table describes the modified parameters when this API is called. For other parameters, see RESTful API Overview.
Parameter
Description
xxxxxx
Domain name corresponding to the country/region where your SDKAppID is located.
China: console.tim.qq.com
Singapore: adminapisgp.im.qcloud.com
Seoul: adminapikr.im.qcloud.com
Frankfurt: adminapiger.im.qcloud.com
Silicon Valley: adminapiusa.im.qcloud.com
Jakarta: adminapiidn.im.qcloud.com
v4/openim/batchsendmsg
Request API
sdkappid
SDKAppID assigned by the Chat console when an app is created
identifier
App admin account. For more information, see the App Admin section in Login Authentication.
usersig
Signature generated by the app admin account. For details, see Generating UserSig.
random
A random 32-bit unsigned integer ranging from 0 to 4294967295.
contenttype
Request format, which should always be json.
Maximum call frequency
12,000 messages/minute. If sent to 500 users at one time, it will be counted as 500 messages.
Sample request
Here, we use sending a text message as an example. To send messages of other types, set MsgBody to the corresponding message type. For more information, see Message Formats.
The admin sends a message to multiple target accounts.
Note：
If you do not want to synchronize the message to From_Account, set SyncOtherMachine to 2.
To synchronize the message to From_Account, set SyncOtherMachine to 1.
{
    "SyncOtherMachine": 2, // Do not synchronize the message to the sender.
    "To_Account": [ // A list of target accounts
        "bonnie",
        "rong"
    ],
    "MsgSeq": 28360, // Sequence number of the message.
    "MsgRandom": 19901224, // Random number of the message
    "MsgBody": [ // Message body
        {
            "MsgType": "TIMTextElem", // Message type. `TIMTextElem` indicates text messages.
            "MsgContent": {
                "Text": "hi, beauty" // Message text
            }
        }
    ],
    "CloudCustomData": "your cloud custom data"
}
The admin specifies an account to send a message to multiple target accounts and sets the information of offline push.
From_Account is the sender specified by the admin. The sender displayed to the recipients is not the admin, but the account specified by the admin. In the following JSON request, dave sends a message to bonnie and rong. When bonnie and rong receive the message, the message sender displayed to them is dave.
Note：
If you do not want to synchronize the message to From_Account, set SyncOtherMachine to 2.
To synchronize the message to From_Account, set SyncOtherMachine to 1.
{
    "SyncOtherMachine": 1, // Synchronize the message to the sender.
    "From_Account": "dave",
    "To_Account": [
        "bonnie",
        "rong"
    ],
    "MsgSeq": 28360, // Sequence number of the message.
    "MsgRandom": 19901224, // Random number of the message
    "MsgBody": [
        {
            "MsgType": "TIMTextElem",
            "MsgContent": {
                "Text": "hi, beauty"
            }
        }
    ],
    "CloudCustomData": "your cloud custom data",
    "OfflinePushInfo": {
        "PushFlag": 0,
        "Desc": "Content to push offline",
        "Ext": "Passthrough content",
        "AndroidInfo": {
            "Sound": "android.mp3"
        },
        "ApnsInfo": {
            "Sound": "apns.mp3",
            "BadgeMode": 1, // If this field is left as default or is set to `0`, the message is counted. If this field is set to `1`, the message is not counted, that is, the badge counter in the upper-right corner does not increase.
            "Title":"apns title", // APNs title
            "SubTitle":"apns subtitle", // APNs subtitle
            "Image":"www.image.com" // Image URL
        }
    }
}
Request fields
Field
Type
Required
Description
SyncOtherMachine
Integer
No
1: synchronize the message to the online terminal and roaming server of From_Account. 
2: do not synchronize the message to From_Account. If this field is not specified, the message is synchronized to the roaming server of From_Account.
From_Account
String
No
Sender account specified by the admin. To set the information of From_Account, the value of this field cannot be left empty.
To_Account
Array
Yes
UserID of the message recipient
MsgSeq
Integer
No
Sequence number (32-bit unsigned integer) of the message. The backend will use this field to remove duplicate messages and sort messages in the same second. For details, see Feature Description. If this field is left empty, the backend will enter a random number.
MsgRandom
Integer
Yes
Random number (32-bit unsigned integer) of the message. It is used by the backend for removing duplicate message within a second. Make sure a random number is entered.
MsgBody
Array
Yes
TIM message. For more information, see Message Formats.
OnlineOnlyFlag
Integer
No
If this field is set to 0, the message will be stored in the historical chat records.
1 means that messages will not be stored in the historical chat records, meaning if the recipient is online, they will receive this message; if offline, they won't. Suitable for implementing some real-time status features.
MsgType
String
Yes
TIM message object type.Valid values:
TIMTextElem (text message) 
TIMLocationElem (location message) 
TIMFaceElem (emoji message) 
TIMCustomElem (custom message)
TIMSoundElem (voice message) 
TIMImageElem (image message) 
TIMFileElem (file message) 
TIMVideoFileElem (video message)
MsgContent
Object
Yes
TIM message object. For more information, see Message Formats.
CloudCustomData
String
No
Custom message data. It is saved in the cloud and will be sent to the receiver. Such data can be pulled after the app is uninstalled and reinstalled.
SendMsgControl
Array
No
Message sending control options is an array of strings, which is valid only for this request.
"NoUnread" means this message is not counted as unread messages.
"NoLastMsg" indicates that this message does not update the conversation list.
"WithMuteNotifications" means that the recipient's Do Not Disturb settings for the sender are effective for this message (it does not take effect by default).
"NoMsgCheck" means that, when cloud-based review is enabled, this message will not be submitted for review.
Example:
"SendMsgControl": ["NoUnread","NoLastMsg","WithMuteNotifications","NoMsgCheck"]
OfflinePushInfo
Object
No
The information to be pushed offline. For more information, see Message Formats.
IsNeedReadReceipt
Integer
No
Whether the message requires a read receipt. 
0: No. 
1: Yes. 
The default value is 0.
Sample response
Response when the message was sent to all the target accounts
 {
  "ErrorInfo": "",
  "ActionStatus": "OK",
  "ErrorCode": 0,
  "MsgKey": "128493_903762_1572870301"
}
Response when the message was not sent to some target accounts
{
  "ActionStatus": "SomeError",
  "ErrorCode": 0,
  "ErrorInfo": "",
  "MsgKey": "4852_28135_1579678877",
  "ErrorList": [ // List of the accounts to which the message was not sent
      {
          "To_Account": "rong", // Account to which the message was not sent
          "ErrorCode":  70107 // Error code. `70107` indicates that the account does not exist.
      }
  ]
}
Response when the message was sent to none of the target accounts
{
  "ActionStatus": "FAIL",
  "ErrorInfo": "invalid To_Account",
  "ErrorCode": 90012
}
Response fields
Field
Type
Description
ActionStatus
String
Request result. OK: successful; FAIL: failed
ErrorCode
Integer
Error code returned for the request.
If the message was sent to any account, the value is 0. 
If the message was sent to none of the target accounts, the value is not 0.
ErrorInfo
String
Error information
ErrorList
Array
List of the target accounts to which the message was not sent or that do not exist. If the message was sent to all the target accounts, the value of this field is empty.
ErrorList.To_Account
String
Target account to which the message was not sent.
ErrorList.ErrorCode
Integer
Error code indicating that the message was not sent. If the error code is 70107, the account does not exist.
MsgKey
String
Unique identifier of the message. This field is required to recall a message. The value is a string of no more than 50 characters.
Error Codes
The returned HTTP status code for this API is always 200 unless a network error (such as error 502) occurs. The specific error code and details can be found in the response fields ErrorCode and ErrorInfo respectively.
For public error codes (60000 to 79999), see Error Codes.
The following table describes the error codes specific to this API:
Error Code
Description
70107
The requested account does not exist.
70169
Server timeout. Try again later.
90001
Failed to parse the JSON request. Make sure the format is valid.
90002
The MsgBody in the JSON request does not meet message format requirements or MsgBody is not an array. For more information, see the Message Element TIMMsgElement section in Message Formats.
90004
Invalid MsgSeq field in the JSON request.
90007
The MsgBody field in the JSON request is not an array. Change it to an array.
90008
The JSON request does not contain the From_Account field or the account specified in From_Account does not exist.
90009
The request requires app admin permissions.
90010
The JSON request does not meet message format requirements. For more information, see the Message Element TIMMsgElement section in Message Formats.
90011
The number of target accounts exceeds 500. Delete some To_Account.
90012
The account specified in To_Account does not exist or is not registered. Make sure the account has been imported to Chat and is correct.
90026
The offline retention time of the message is incorrect. Messages cannot be retained offline for more than 7 days.
90048
The requested account does not exist.
90992
Internal service error. Try again. If this error code is returned for all requests and webhook is enabled, make sure the app server returns the results to the Chat backend normally.
91000
Internal service error. Try again.
93000
The JSON packet exceeds the maximum size of 12 KB.
API Debugging Tool
Use the RESTful API online debugging tool to debug this API.
Reference
Sending One-to-One Messages to One User (v4/openim/sendmsg)
Sending Ordinary Messages in a Group (v4/group_open_http_svc/send_group_msg)
Sending System Messages in a Group (v4/group_open_http_svc/send_group_system_notification)
Message Formats

Feature Overview
API Calling Description
Error Codes
API Debugging Tool
Reference

Parameter	Description
xxxxxx	Domain name corresponding to the country/region where your SDKAppID is located. China: `console.tim.qq.com` Singapore: `adminapisgp.im.qcloud.com` Seoul: `adminapikr.im.qcloud.com` Frankfurt: `adminapiger.im.qcloud.com` Silicon Valley: `adminapiusa.im.qcloud.com` Jakarta: `adminapiidn.im.qcloud.com`
v4/openim/batchsendmsg	Request API
sdkappid	SDKAppID assigned by the Chat console when an app is created
identifier	App admin account. For more information, see the App Admin section in Login Authentication.
usersig	Signature generated by the app admin account. For details, see Generating UserSig.
random	A random 32-bit unsigned integer ranging from 0 to 4294967295.
contenttype	Request format, which should always be `json`.

Field	Type	Required	Description
SyncOtherMachine	Integer	No	`1`: synchronize the message to the online terminal and roaming server of `From_Account`. `2`: do not synchronize the message to `From_Account`. If this field is not specified, the message is synchronized to the roaming server of `From_Account`.
From_Account	String	No	Sender account specified by the admin. To set the information of `From_Account`, the value of this field cannot be left empty.
To_Account	Array	Yes	`UserID` of the message recipient
MsgSeq	Integer	No	Sequence number (32-bit unsigned integer) of the message. The backend will use this field to remove duplicate messages and sort messages in the same second. For details, see Feature Description. If this field is left empty, the backend will enter a random number.
MsgRandom	Integer	Yes	Random number (32-bit unsigned integer) of the message. It is used by the backend for removing duplicate message within a second. Make sure a random number is entered.
MsgBody	Array	Yes	TIM message. For more information, see Message Formats.
OnlineOnlyFlag	Integer	No	If this field is set to `0`, the message will be stored in the historical chat records. `1` means that messages will not be stored in the historical chat records, meaning if the recipient is online, they will receive this message; if offline, they won't. Suitable for implementing some real-time status features.
MsgType	String	Yes	TIM message object type.Valid values: `TIMTextElem` (text message) `TIMLocationElem` (location message) `TIMFaceElem` (emoji message) `TIMCustomElem` (custom message) `TIMSoundElem` (voice message) `TIMImageElem` (image message) `TIMFileElem` (file message) `TIMVideoFileElem` (video message)
MsgContent	Object	Yes	TIM message object. For more information, see Message Formats.
CloudCustomData	String	No	Custom message data. It is saved in the cloud and will be sent to the receiver. Such data can be pulled after the app is uninstalled and reinstalled.
SendMsgControl	Array	No	Message sending control options is an array of strings, which is valid only for this request. "NoUnread" means this message is not counted as unread messages. "NoLastMsg" indicates that this message does not update the conversation list. "WithMuteNotifications" means that the recipient's Do Not Disturb settings for the sender are effective for this message (it does not take effect by default). "NoMsgCheck" means that, when cloud-based review is enabled, this message will not be submitted for review. Example: "SendMsgControl": ["NoUnread","NoLastMsg","WithMuteNotifications","NoMsgCheck"]
OfflinePushInfo	Object	No	The information to be pushed offline. For more information, see Message Formats.
IsNeedReadReceipt	Integer	No	Whether the message requires a read receipt. `0`: No. `1`: Yes. The default value is `0`.

Error Code	Description
70107	The requested account does not exist.
70169	Server timeout. Try again later.
90001	Failed to parse the JSON request. Make sure the format is valid.
90002	The `MsgBody` in the JSON request does not meet message format requirements or `MsgBody` is not an array. For more information, see the Message Element TIMMsgElement section in Message Formats.
90004	Invalid `MsgSeq` field in the JSON request.
90007	The `MsgBody` field in the JSON request is not an array. Change it to an array.
90008	The JSON request does not contain the `From_Account` field or the account specified in `From_Account` does not exist.
90009	The request requires app admin permissions.
90010	The JSON request does not meet message format requirements. For more information, see the Message Element TIMMsgElement section in Message Formats.
90011	The number of target accounts exceeds 500. Delete some `To_Account`.
90012	The account specified in `To_Account` does not exist or is not registered. Make sure the account has been imported to Chat and is correct.
90026	The offline retention time of the message is incorrect. Messages cannot be retained offline for more than 7 days.
90048	The requested account does not exist.
90992	Internal service error. Try again. If this error code is returned for all requests and webhook is enabled, make sure the app server returns the results to the Chat backend normally.
91000	Internal service error. Try again.
93000	The JSON packet exceeds the maximum size of 12 KB.