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AgoraIO · Sep 12, 2023 · 0f603a2 · 0f603a2
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diff --git a/...gora-chat/Develop/Messages/Retrieve Messages/agora_chat_retrieve_message_web.md b/...gora-chat/Develop/Messages/Retrieve Messages/agora_chat_retrieve_message_web.md
@@ -69,7 +69,7 @@ WebIM.conn.getHistoryMessages(options).then((res)=>{
 
 ### Delete historical messages from the server unidirectionally
 
-Call `removeHistoryMessages` to delete historical messages one way from the server. You can remove a maximum of 50 messages from the server each time. Once the messages are deleted, you can no longer retrieve them from the server. Other chat users can still get the messages from the server.
+Call `removeHistoryMessages` to delete historical messages one way from the server. You can remove a maximum of 20 messages from the server each time. Once the messages are deleted, you can no longer retrieve them from the server. Other chat users can still get the messages from the server.
 
 ```javascript
 // Delete messages by timestamp

diff --git a/en-US/markdown/agora-chat/RESTful API Reference/agora_chat_restful_message.md b/en-US/markdown/agora-chat/RESTful API Reference/agora_chat_restful_message.md
@@ -1128,7 +1128,7 @@ This method retrieves historical messages sent and received by the user.
 - Messages cannot be retrieved in real time. For example, at 9 a.m., you can retrieve messages that are sent or received at 8 a.m.
 - The default storage time of historical messages differs by plan version. For details, see [package details](./agora_chat_plan?platform=RESTful).
 
-For each App Key, the call frequency limit of this method is 100 per second.
+For each App Key, the call frequency limit of this method is 10 per minute.
 
 ### HTTP request