diff --git a/CHANGELOG b/CHANGELOG
index ec5b36a53..73901977a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+2021-04-19 Version: 1.36.688
+- Export StartBack2BackCall API.
+
 2021-04-19 Version: 1.36.687
 - Generated 2020-10-29 for `reid_cloud`.
 
diff --git a/VERSION b/VERSION
index 02f4acdc5..57d552c87 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.36.687
\ No newline at end of file
+1.36.688
\ No newline at end of file
diff --git a/ccc/include/alibabacloud/ccc/model/StartBack2BackCallRequest.h b/ccc/include/alibabacloud/ccc/model/StartBack2BackCallRequest.h
index 5b6c24d03..6ec98c34c 100644
--- a/ccc/include/alibabacloud/ccc/model/StartBack2BackCallRequest.h
+++ b/ccc/include/alibabacloud/ccc/model/StartBack2BackCallRequest.h
@@ -41,6 +41,8 @@ namespace AlibabaCloud
 				void setBroker(const std::string& broker);
 				std::string getUserId()const;
 				void setUserId(const std::string& userId);
+				std::string getDeviceId()const;
+				void setDeviceId(const std::string& deviceId);
 				std::string getAdditionalBroker()const;
 				void setAdditionalBroker(const std::string& additionalBroker);
 				std::string getTags()const;
@@ -56,6 +58,7 @@ namespace AlibabaCloud
 				std::string callee_;
 				std::string broker_;
 				std::string userId_;
+				std::string deviceId_;
 				std::string additionalBroker_;
 				std::string tags_;
 				int timeoutSeconds_;
diff --git a/ccc/src/model/StartBack2BackCallRequest.cc b/ccc/src/model/StartBack2BackCallRequest.cc
index 5c55f0ce0..983a7cdca 100644
--- a/ccc/src/model/StartBack2BackCallRequest.cc
+++ b/ccc/src/model/StartBack2BackCallRequest.cc
@@ -60,6 +60,17 @@ void StartBack2BackCallRequest::setUserId(const std::string& userId)
 	setParameter("UserId", userId);
 }
 
+std::string StartBack2BackCallRequest::getDeviceId()const
+{
+	return deviceId_;
+}
+
+void StartBack2BackCallRequest::setDeviceId(const std::string& deviceId)
+{
+	deviceId_ = deviceId;
+	setParameter("DeviceId", deviceId);
+}
+
 std::string StartBack2BackCallRequest::getAdditionalBroker()const
 {
 	return additionalBroker_;