diff --git a/components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/handlers/throttling/ThrottleHandler.java b/components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/handlers/throttling/ThrottleHandler.java
index d674ffe462a7..0fe948033067 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/handlers/throttling/ThrottleHandler.java
+++ b/components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/handlers/throttling/ThrottleHandler.java
@@ -917,7 +917,10 @@ private void initThrottleForApplicationLevelSpikeArrest(MessageContext synCtx,
 
                 if (createApplicationLevelSpikeArrestPolicy) {
                     synchronized (authenticationContext.getSubscriberTenantDomain() +
-                            authenticationContext.getApplicationTier().intern()) {
+                            authenticationContext.getApplicationTier().intern() + "_appSpikeArrest") {
+                        if (throttle.getThrottleContext(applicationLevelThrottleKey) != null) {
+                            return;
+                        }
                         OMElement spikeArrestApplicationLevelPolicy = createSpikeArrestApplicationLevelPolicy(
                                 applicationLevelThrottleKey, maxRequestCount, applicationSpikeArrestWindowUnitTime);
                         if (spikeArrestApplicationLevelPolicy != null) {
diff --git a/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dto/APIKeyValidationInfoDTO.java b/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dto/APIKeyValidationInfoDTO.java
index f76186d65f51..8de5147c0bf8 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dto/APIKeyValidationInfoDTO.java
+++ b/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dto/APIKeyValidationInfoDTO.java
@@ -57,9 +57,6 @@ public class APIKeyValidationInfoDTO implements Serializable {
     //should be its first element.
     private  List<String> throttlingDataList;
     private int spikeArrestLimit;
-
-
-
     private int applicationSpikeArrestLimit;
     private String subscriberTenantDomain;
     private String spikeArrestUnit;
diff --git a/components/apimgt/org.wso2.carbon.apimgt.internal.service/src/main/java/org/wso2/carbon/apimgt/internal/service/utils/SubscriptionValidationDataUtil.java b/components/apimgt/org.wso2.carbon.apimgt.internal.service/src/main/java/org/wso2/carbon/apimgt/internal/service/utils/SubscriptionValidationDataUtil.java
index 10e5665f9f42..0deb5a7b818b 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.internal.service/src/main/java/org/wso2/carbon/apimgt/internal/service/utils/SubscriptionValidationDataUtil.java
+++ b/components/apimgt/org.wso2.carbon.apimgt.internal.service/src/main/java/org/wso2/carbon/apimgt/internal/service/utils/SubscriptionValidationDataUtil.java
@@ -39,7 +39,32 @@
 import org.wso2.carbon.apimgt.api.model.subscription.Subscription;
 import org.wso2.carbon.apimgt.api.model.subscription.SubscriptionPolicy;
 import org.wso2.carbon.apimgt.api.model.subscription.URLMapping;
-import org.wso2.carbon.apimgt.internal.service.dto.*;
+import org.wso2.carbon.apimgt.internal.service.dto.APIDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.APIListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApiPolicyConditionGroupDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApiPolicyDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApiPolicyListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationKeyMappingDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationKeyMappingListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationPolicyDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ApplicationPolicyListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.BandwidthLimitDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.BurstLimitDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.EventCountLimitDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.GlobalPolicyDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.GlobalPolicyListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.GroupIdDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.RequestCountLimitDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ScopeDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ScopesListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.SubscriptionDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.SubscriptionListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.SubscriptionPolicyDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.SubscriptionPolicyListDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.ThrottleLimitDTO;
+import org.wso2.carbon.apimgt.internal.service.dto.URLMappingDTO;
 import org.wso2.carbon.apimgt.rest.api.common.RestApiCommonUtil;
 import org.wso2.carbon.utils.multitenancy.MultitenantConstants;