diff --git a/src/main/resources/db/changelog/schema/04-added-operation-field-in-network-data.xml b/src/main/resources/db/changelog/schema/04-added-operation-field-in-network-data.xml
index 62b93b9..88b3f92 100644
--- a/src/main/resources/db/changelog/schema/04-added-operation-field-in-network-data.xml
+++ b/src/main/resources/db/changelog/schema/04-added-operation-field-in-network-data.xml
@@ -48,4 +48,8 @@
         <comment>Remove not null constraint from payload to support delete operation</comment>
         <dropNotNullConstraint tableName="network_data" columnName="payload"/>
     </changeSet>
+    <changeSet id="4.3" author="cps">
+        <comment>Added not null constraint to operation field</comment>
+        <addNotNullConstraint tableName="network_data" columnName="operation"/>
+    </changeSet>
 </databaseChangeLog>