diff --git a/NOTICE b/NOTICE
index b1deb65eb3d0ab0da6a889ec666f7a9652025b31..324ec0e0144b170b97128dc477777a7160f26658 100644
--- a/NOTICE
+++ b/NOTICE
@@ -83,7 +83,7 @@ The following software have components provided under the terms of this license:
 - Byte Buddy (without dependencies) (from https://repo1.maven.org/maven2/net/bytebuddy/byte-buddy)
 - Byte Buddy Java agent (from https://repo1.maven.org/maven2/net/bytebuddy/byte-buddy-agent)
 - ClassMate (from http://github.com/cowtowncoder/java-classmate)
-- Cloud Key Management Service (KMS) API v1-rev20230421-2.0.0 (from https://repo1.maven.org/maven2/com/google/apis/google-api-services-cloudkms)
+- Cloud Key Management Service (KMS) API (from https://repo1.maven.org/maven2/com/google/apis/google-api-services-cloudkms)
 - Collections (from https://repo1.maven.org/maven2/commons-collections/commons-collections)
 - Commons Digester (from http://commons.apache.org/digester/)
 - Converter: Jackson (from https://github.com/square/retrofit, https://repo1.maven.org/maven2/com/squareup/retrofit2/converter-jackson)
@@ -288,7 +288,7 @@ The following software have components provided under the terms of this license:
 - jackson-databind (from http://github.com/FasterXML/jackson, http://wiki.fasterxml.com/JacksonHome, https://github.com/FasterXML/jackson)
 - java-cloudant (from https://cloudant.com)
 - javatuples (from http://www.javatuples.org)
-- javax.annotation-api (from http://jcp.org/en/jsr/detail?id=250)
+- javax.annotation API (from http://jcp.org/en/jsr/detail?id=250)
 - javax.inject (from http://code.google.com/p/atinject/, https://repo1.maven.org/maven2/org/glassfish/hk2/external/javax.inject)
 - jose4j (from https://bitbucket.org/b_c/jose4j/)
 - json-path (from http://code.google.com/p/json-path/, https://github.com/jayway/JsonPath)
@@ -428,7 +428,7 @@ The following software have components provided under the terms of this license:
 - Jakarta Activation API (from https://github.com/eclipse-ee4j/jaf, https://github.com/jakartaee/jaf-api, https://repo1.maven.org/maven2/jakarta/activation/jakarta.activation-api)
 - Java Architecture for XML Binding (from http://jaxb.java.net/, https://repo1.maven.org/maven2/javax/xml/bind/jaxb-api)
 - JavaBeans Activation Framework (from <http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp>, http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp, https://repo1.maven.org/maven2/com/sun/activation/javax.activation)
-- javax.annotation-api (from http://jcp.org/en/jsr/detail?id=250)
+- javax.annotation API (from http://jcp.org/en/jsr/detail?id=250)
 
 ========================================================================
 CDDL-1.1
@@ -438,7 +438,7 @@ The following software have components provided under the terms of this license:
 - Java Architecture for XML Binding (from http://jaxb.java.net/, https://repo1.maven.org/maven2/javax/xml/bind/jaxb-api)
 - JavaBeans Activation Framework (from <http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp>, http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp, https://repo1.maven.org/maven2/com/sun/activation/javax.activation)
 - JavaMail API (from https://repo1.maven.org/maven2/com/sun/mail/javax.mail)
-- javax.annotation-api (from http://jcp.org/en/jsr/detail?id=250)
+- javax.annotation API (from http://jcp.org/en/jsr/detail?id=250)
 - tomcat-embed-core (from http://tomcat.apache.org/)
 
 ========================================================================
@@ -528,7 +528,7 @@ The following software have components provided under the terms of this license:
 - Java Architecture for XML Binding (from http://jaxb.java.net/, https://repo1.maven.org/maven2/javax/xml/bind/jaxb-api)
 - Java Servlet 4.0 API
 - JavaBeans Activation Framework (from <http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp>, http://java.sun.com/javase/technologies/desktop/javabeans/jaf/index.jsp, https://repo1.maven.org/maven2/com/sun/activation/javax.activation)
-- javax.annotation-api (from http://jcp.org/en/jsr/detail?id=250)
+- javax.annotation API (from http://jcp.org/en/jsr/detail?id=250)
 - tomcat-embed-core (from http://tomcat.apache.org/)
 
 ========================================================================
diff --git a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/config/ExternalSubscriptionsManager.java b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/config/ExternalSubscriptionsManager.java
index 4b4cdc9e074b85c4a32606ea79c2f900126c3ddc..7889a433389510dcace6193903cd621648e8335a 100644
--- a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/config/ExternalSubscriptionsManager.java
+++ b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/config/ExternalSubscriptionsManager.java
@@ -18,6 +18,7 @@
 package org.opengroup.osdu.notification.provider.gcp.config;
 
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
@@ -50,7 +51,14 @@ public class ExternalSubscriptionsManager {
     List<Subscription> cachedInfos = Optional.ofNullable(getExternalSubscriptions(dataPartitionId))
         .orElseThrow(() -> new AppException(HttpStatus.SC_INTERNAL_SERVER_ERROR, "Server error", "OQM | Subscription info cache was not initialized"))
         .getSubscriptions();
-    return getFilteredSubscription(cachedInfos, dataPartitionId, subscriptionId, serviceTopic);
+
+    Subscription subscription = getFilteredSubscription(cachedInfos, dataPartitionId,
+        subscriptionId, serviceTopic);
+
+    if (Objects.nonNull(subscription) && Objects.isNull(subscription.getSecret())) {
+      return sendGetSubscriptionRequest(dataPartitionId, subscriptionId, serviceTopic, cachedInfos);
+    }
+    return subscription;
   }
 
   private Subscription getFilteredSubscription(List<Subscription> subscriptions, String dataPartitionId,
diff --git a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/OqmNotificationHandler.java b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/OqmNotificationHandler.java
index 1b41fbb1a39e6c4003fc71e7abdfed6a95de248e..a4ecd52967de78adb6bfddeea2c1c22d62a33fc4 100644
--- a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/OqmNotificationHandler.java
+++ b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/OqmNotificationHandler.java
@@ -16,6 +16,7 @@
 
 package org.opengroup.osdu.notification.provider.gcp.pubsub;
 
+import java.util.Objects;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.http.HttpStatus;
@@ -57,6 +58,12 @@ public class OqmNotificationHandler {
     }
 
     Subscription subscription = externalSubscriptionsManager.getSubscription(dataPartitionId, subscriptionId, serviceTopic);
+    if (Objects.isNull(subscription)) {
+      throw new AppException(HttpStatus.SC_INTERNAL_SERVER_ERROR,
+          "Subscriber config not found.",
+          String.format("Subscriber with id: %s not found in cache", subscriptionId)
+      );
+    }
     Secret secret = subscription.getSecret();
 
     SecretAuth secretAuth = authFactory.getSecretAuth(secret.getSecretType());
diff --git a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/receiver/OqmPublishTopicReceiver.java b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/receiver/OqmPublishTopicReceiver.java
index 3f784f5b6be477e0e2279223c1c55a5dfa35b487..49f985eb1a9e9ab5bd55515a154a212121854ab7 100644
--- a/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/receiver/OqmPublishTopicReceiver.java
+++ b/provider/notification-gc/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/receiver/OqmPublishTopicReceiver.java
@@ -17,6 +17,7 @@
 
 package org.opengroup.osdu.notification.provider.gcp.pubsub.receiver;
 
+import java.util.Map;
 import lombok.extern.slf4j.Slf4j;
 import org.opengroup.osdu.core.common.http.HttpResponse;
 import org.opengroup.osdu.core.common.model.http.AppException;
@@ -27,8 +28,6 @@ import org.opengroup.osdu.core.gcp.oqm.model.OqmSubscription;
 import org.opengroup.osdu.notification.provider.gcp.pubsub.OqmNotificationHandler;
 import org.opengroup.osdu.notification.provider.gcp.thread.ThreadScopeContextHolder;
 
-import java.util.Map;
-
 @Slf4j
 public class OqmPublishTopicReceiver implements OqmMessageReceiver {