modify chat doc

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_android.md

@@ -187,6 +187,7 @@ The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
 | :--------- | :----- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact [email protected] to enable it.   |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [[email protected]](mailto:[email protected]) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_flutter.md

@@ -157,6 +157,7 @@ The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
 | :--------- | :----- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact [email protected] to enable it.   |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [[email protected]](mailto:[email protected]) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_ios.md

@@ -146,6 +146,7 @@ The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
 | :--------- | :----- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact [email protected] to enable it.   |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [[email protected]](mailto:[email protected]) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_rn.md

@@ -232,6 +232,7 @@ The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
 | :--------- | :----- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact [email protected] to enable it.   |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [[email protected]](mailto:support@agora.io) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_unity.md

@@ -175,7 +175,8 @@ For a group chat, group members can determine whether to require message read re
 The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
-| :--------- | :----- | :------- | 
+| :--------- | :----- | :------- |
+| Enabling the function   | Disabled   | To use this feature, contact support@agora.io to enable it.   | 
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [support@agora.io](mailto:support@agora.io) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_web.md

@@ -146,6 +146,7 @@ For a group chat, group members can determine whether to require message read re
 
 | Feature Restriction| Default | Description | Error |
 | :--------- | :----- | :------- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact [email protected] to enable it.   | The error 503 "group ack not open" is returned if you fail to enable this feature before using it.    |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [[email protected]](mailto:[email protected]) to grant the permission to regular group members.| The error "group ack msg permission denied" is returned if regular group members without the permission request read receipts when sending a message.  |
 | Number of days before read receipts cannot be returned after the message is sent | 3 days | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts. | The error "group ack msg not found" is returned if read receipts are sent three days after the message is sent. | 
 | Chat group size   | 500 members | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts.  | If the upper limit is exceeded, no error is returned, but the latest read receipt record will overwrite the earliest one.|

en-US/markdown/agora-chat/Develop/Messages/Message Receipts/agora_chat_message_receipt_windows.md

@@ -176,6 +176,7 @@ The following table shows the restrictions of this feature:
 
 | Feature Restriction| Default | Description | 
 | :--------- | :----- | :------- | 
+| Enabling the function   | Disabled   | To use this feature, contact support@agora.io to enable it.   |
 | Permission  | Group owner and administrators  | By default, only the group owner and administrators can request read receipts when sending a message. <br/>You can contact [support@agora.io](mailto:support@agora.io) to grant the permission to regular group members.| 
 | Number of days before read receipts cannot be returned after the message is sent   | 3 days    | The server no longer records the group members that read the message three days after it is sent, nor sends the read receipts.   | 
 | Chat group size   | 500 members   | This feature is available only to groups with up to 500 members. In other words, each message in a group can have up to 500 read receipts. If the upper limit is exceeded, the latest read receipt record will overwrite the earliest one.  | 

en-US/markdown/agora-chat/RESTful API Reference/Push/agora_chat_restful_send_push_notification.md

@@ -77,6 +77,8 @@ If the returned HTTP status code is `200`, the request succeeds, and the respons
 | :---------------- | :----- | :------------------------- |
 | `data`            | Object | The push result. The server determines the push status based on the push result. |
 | `data.pushStatus` | String | The push status: <br/> - `SUCCESS`: The push succeeds.<br/> - `FAIL`: The push fails due to an error that is not caused by the server, like `bad device token`, indicating that the mobile device delivers an incorrect device token to the server and the server does not accept it.<br/> - `ERROR`: The push exception occurs due to a server error, for example, connection timeout or read or write timeout.|
+| `data.data`       | Object | The push result data returned by the push service used by the push notification recipient. |
+| `data.desc`       | String | The description for the push failure.                  |
 
 For other fields and detailed descriptions, see [Common parameters](#param).