diff --git a/BasicServicesKit/commonevent/oh_commonevent.h b/BasicServicesKit/commonevent/oh_commonevent.h
index ea252db50df72ce92bfba3be69c35595e59a4930..beb02ebfb97a6254d50d316a7f81330b9d2420ce 100644
--- a/BasicServicesKit/commonevent/oh_commonevent.h
+++ b/BasicServicesKit/commonevent/oh_commonevent.h
@@ -62,7 +62,7 @@ typedef enum CommonEvent_ErrCode {
     /**
      * @error The common event send frequency too high.
      *
-     * @since 19
+     * @since 20
      */
     COMMONEVENT_ERR_SENDING_LIMIT_EXCEEDED = 1500003,
 
@@ -634,7 +634,7 @@ CommonEvent_ErrCode OH_CommonEvent_SetDoubleArrayToParameters(CommonEvent_Parame
  * @return Returns the error code.
  *         Returns {@link COMMONEVENT_ERR_OK} if the operation is successful.
  *         Returns {@link COMMONEVENT_ERR_INVALID_PARAMETER} if a parameter error occurs.
- *         Returns {@link COMMONEVENT_ERR_SENDING_LIMIT_EXCEEDED} if the common event sending frequency too high.
+ *         Returns {@link COMMONEVENT_ERR_SENDING_LIMIT_EXCEEDED} if the common event sending frequency too high, add since api 20.
  *         Returns {@link COMMONEVENT_ERR_FAIL_SEND_REQUEST } if IPC request failed to send.
  *         Returns {@link COMMONEVENT_ERR_INIT_UNDONE } if ces not init done.
  * @since 18
@@ -649,7 +649,7 @@ CommonEvent_ErrCode OH_CommonEvent_Publish(const char* event);
  * @return Returns the error code.
  *         Returns {@link COMMONEVENT_ERR_OK} if the operation is successful.
  *         Returns {@link COMMONEVENT_ERR_INVALID_PARAMETER} if a parameter error occurs.
- *         Returns {@link COMMONEVENT_ERR_SENDING_LIMIT_EXCEEDED} if the common event sending frequency too high.
+ *         Returns {@link COMMONEVENT_ERR_SENDING_LIMIT_EXCEEDED} if the common event sending frequency too high, add since api 20.
  *         Returns {@link COMMONEVENT_ERR_FAIL_SEND_REQUEST } if IPC request failed to send.
  *         Returns {@link COMMONEVENT_ERR_INIT_UNDONE } if ces not init done.
  * @since 18