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Feature Overview
This API imports one-to-one chat history to Tencent Cloud Chat** in chronological order**.
It imports your messages from other instant messaging platforms to Tencent Cloud Chat in chronological order.
It updates a conversation.
It does not trigger a callback.
It deduplicates the imported messages in a one-to-one conversation based on the MsgSeq, MsgRandom, and MsgTimeStamp fields. When the values of all these three fields match their counterparts, the two messages are considered duplicates, regardless of their contents. In addition, if the MsgSeq, MsgRandom, and MsgTimeStamp fields of the two messages matches each other, but from_account and to_account are opposite, the two messages are also considered duplicates.
Imported messages will not be overwritten by the same messages from later imports.
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.
API Calling Description
Sample request URL
https://xxxxxx/v4/openim/importmsg?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/importmsg
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
200 calls per second
Sample request
Importing real-time messages
{
  "SyncFromOldSystem": 5, // Imports real-time messages, marks them as unread and pushes them to the client.
  "From_Account": "lumotuwe1", // Account of the sender
  "To_Account": "lumotuwe2", // Account of the recipient
  "MsgSeq": 827092, // Sequence number of the message
  "MsgRandom": 1287657, // A random number assigned to the message
  "MsgTimeStamp": 1556178721, // UNIX timestamp in seconds
  "MsgBody": [ // Message body. This is a text message
      {
          "MsgType": "TIMTextElem", // Text message element
          "MsgContent": {
              "Text": "hi, beauty"
          }
      }
  ],
  "CloudCustomData": "your cloud custom data"
}
Importing historical messages
 {
  "SyncFromOldSystem": 2, // Imports historical messages, marks them as read and does not push them to the client.
  "From_Account": "lumotuwe1", // Account of the sender
  "To_Account": "lumotuwe2", // Account of the recipient
  "MsgSeq": 827092, // Sequence number of the message
  "MsgRandom": 1287657, // A random number assigned to the message
  "MsgTimeStamp": 1556178721, // UNIX timestamp in seconds
  "MsgBody": [ // Message body. This is a text message
      {
          "MsgType": "TIMTextElem", // Text message element
          "MsgContent": {
              "Text": "hi, beauty" // Message content
          }
      }
  ],
  "CloudCustomData": "your cloud custom data"
}
Request fields
Field
Type
Required
Description
SyncFromOldSystem
Integer
Yes
Valid values: 2 and 5. 
2: Imports historical messages, marks them as read and does not push them to the client.
5: Imports real-time messages, marks them as unread and pushes them to the client.
From_Account
String
Yes
UserID of the sender, which is used to specify the message sender
To_Account
String
Yes
UserID of the 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.
MsgTimeStamp
Integer
Yes
UNIX timestamp in seconds. It marks the time when the message was sent and is used to remove duplicate messages. For details, see Feature Description.
MsgBody
Array
Yes
Message body. For details on formats, please see Message Formats. (Note: a message can contain multiple message elements, in which case MsgBody is an array.)
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
Different message object types (MsgType) have different formats (MsgContent). For details, see Message Formats.
CloudCustomData
String
No
Custom message data. It is saved in the cloud and will be sent to the peer end. Such data can be pulled after the app is uninstalled and reinstalled.
Sample responses
{
   "ActionStatus" : "OK",
   "ErrorInfo" : "",
   "ErrorCode" : 0
}
﻿
Response fields
Field
Type
Description
ActionStatus
String
Request result. OK: Successful; FAIL: Failed
ErrorCode
Integer
Error code. 0: successful; other values: failed
ErrorInfo
String
Error information
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
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.
90003
The To_Account field is missing in the JSON request or it is not a string.
90005
The MsgRandom field is missing in the JSON request or it is not an integer.
90006
The MsgTimeStamp field is missing in the JSON request or it is not an integer.
90007
The MsgBody field in the JSON request is not an array. Change it to an array.
90008
The From_Account field is missing in the JSON request or it is not an integer.
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 recipients exceeded 500. Try to reduce the number of accounts in 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.
90030
The SyncFromOldSystem field is missing in the JSON request or it is not an integer.
90048
The requested account does not exist.
90992
Internal service error. Try again. If this error code is returned for all requests and third-party callback is enabled, make sure the app server returns the callback 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.
References
Importing Group Messages (v4/group_open_http_svc/import_group_msg)

Feature Overview
API Calling Description
Error Codes
API Debugging Tool
References

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/importmsg	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
SyncFromOldSystem	Integer	Yes	Valid values: `2` and `5`. `2`: Imports historical messages, marks them as read and does not push them to the client. `5`: Imports real-time messages, marks them as unread and pushes them to the client.
From_Account	String	Yes	`UserID` of the sender, which is used to specify the message sender
To_Account	String	Yes	`UserID` of the 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.
MsgTimeStamp	Integer	Yes	UNIX timestamp in seconds. It marks the time when the message was sent and is used to remove duplicate messages. For details, see Feature Description.
MsgBody	Array	Yes	Message body. For details on formats, please see Message Formats. (Note: a message can contain multiple message elements, in which case `MsgBody` is an array.)
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	Different message object types (`MsgType`) have different formats (`MsgContent`). For details, see Message Formats.
CloudCustomData	String	No	Custom message data. It is saved in the cloud and will be sent to the peer end. Such data can be pulled after the app is uninstalled and reinstalled.

Error Code	Description
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.
90003	The `To_Account` field is missing in the JSON request or it is not a string.
90005	The `MsgRandom` field is missing in the JSON request or it is not an integer.
90006	The `MsgTimeStamp` field is missing in the JSON request or it is not an integer.
90007	The `MsgBody` field in the JSON request is not an array. Change it to an array.
90008	The `From_Account` field is missing in the JSON request or it is not an integer.
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 recipients exceeded 500. Try to reduce the number of accounts in 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.
90030	The `SyncFromOldSystem` field is missing in the JSON request or it is not an integer.
90048	The requested account does not exist.
90992	Internal service error. Try again. If this error code is returned for all requests and third-party callback is enabled, make sure the app server returns the callback results to the Chat backend normally.
91000	Internal service error. Try again.
93000	The JSON packet exceeds the maximum size of 12 KB.