diff --git a/api/src/main/java/com/michelin/ns4kafka/controllers/SchemaController.java b/api/src/main/java/com/michelin/ns4kafka/controllers/SchemaController.java
index 2317f830..59094075 100644
--- a/api/src/main/java/com/michelin/ns4kafka/controllers/SchemaController.java
+++ b/api/src/main/java/com/michelin/ns4kafka/controllers/SchemaController.java
@@ -100,31 +100,22 @@ public Single<HttpResponse<Schema>> apply(String namespace, @Valid @Body Schema
                             .defaultIfEmpty(Optional.empty())
                             .flatMapSingle(latestSubjectOptional -> schemaService
                                     .register(ns, schema)
-                                    .flatMap(id -> schemaService
-                                            .getLatestSubject(ns, schema.getMetadata().getName())
-                                            .map(Optional::of)
-                                            .defaultIfEmpty(Optional.empty())
-                                            .flatMapSingle(registeredSchemaOptional -> {
-                                                if (registeredSchemaOptional.isEmpty()) {
-                                                    return Single.error(new Exception(String.format("Cannot register schema %s", schema.getMetadata().getName())));
-                                                }
-
-                                                Schema registeredSchema = registeredSchemaOptional.get();
-                                                ApplyStatus status;
-
-                                                if (latestSubjectOptional.isEmpty()) {
-                                                    status = ApplyStatus.created;
-                                                    sendEventLog(schema.getKind(), registeredSchema.getMetadata(), status, null, registeredSchema.getSpec());
-                                                } else if (registeredSchema.getSpec().getVersion() > latestSubjectOptional.get().getSpec().getVersion()) {
-                                                    status = ApplyStatus.changed;
-                                                    sendEventLog(schema.getKind(), registeredSchema.getMetadata(), status,
-                                                            latestSubjectOptional.get().getSpec(), registeredSchema.getSpec());
-                                                } else {
-                                                    status = ApplyStatus.unchanged;
-                                                }
-
-                                                return Single.just(formatHttpResponse(schema, status));
-                                            })));
+                                    .map(id -> {
+                                        ApplyStatus status;
+
+                                        if (latestSubjectOptional.isEmpty()) {
+                                            status = ApplyStatus.created;
+                                            sendEventLog(schema.getKind(), schema.getMetadata(), status, null, schema.getSpec());
+                                        } else if (!id.equals(latestSubjectOptional.get().getSpec().getId())) {
+                                            status = ApplyStatus.changed;
+                                            sendEventLog(schema.getKind(), schema.getMetadata(), status, latestSubjectOptional.get().getSpec(),
+                                                    schema.getSpec());
+                                        } else {
+                                            status = ApplyStatus.unchanged;
+                                        }
+
+                                        return formatHttpResponse(schema, status);
+                                    }));
                 });
     }
 
diff --git a/api/src/test/java/com/michelin/ns4kafka/controllers/SchemaControllerTest.java b/api/src/test/java/com/michelin/ns4kafka/controllers/SchemaControllerTest.java
index aa4b7065..93f0acb2 100644
--- a/api/src/test/java/com/michelin/ns4kafka/controllers/SchemaControllerTest.java
+++ b/api/src/test/java/com/michelin/ns4kafka/controllers/SchemaControllerTest.java
@@ -69,9 +69,7 @@ void applyCreated() {
         when(namespaceService.findByName("myNamespace")).thenReturn(Optional.of(namespace));
         when(schemaService.isNamespaceOwnerOfSubject(namespace, schema.getMetadata().getName())).thenReturn(true);
         when(schemaService.validateSchemaCompatibility("local", schema)).thenReturn(Single.just(List.of()));
-        when(schemaService.getLatestSubject(namespace, schema.getMetadata().getName()))
-                .thenReturn(Maybe.empty())
-                .thenReturn(Maybe.just(schema));
+        when(schemaService.getLatestSubject(namespace, schema.getMetadata().getName())).thenReturn(Maybe.empty());
         when(schemaService.register(namespace, schema)).thenReturn(Single.just(1));
         when(securityService.username()).thenReturn(Optional.of("test-user"));
         when(securityService.hasRole(ResourceBasedSecurityRule.IS_ADMIN)).thenReturn(false);
@@ -92,15 +90,12 @@ void applyCreated() {
     void applyChanged() {
         Namespace namespace = buildNamespace();
         Schema schema = buildSchema();
-        Schema schemaV2 = buildSchema();
-        schemaV2.getSpec().setVersion(2);
 
         when(namespaceService.findByName("myNamespace")).thenReturn(Optional.of(namespace));
         when(schemaService.isNamespaceOwnerOfSubject(namespace, schema.getMetadata().getName())).thenReturn(true);
         when(schemaService.validateSchemaCompatibility("local", schema)).thenReturn(Single.just(List.of()));
         when(schemaService.getLatestSubject(namespace, schema.getMetadata().getName()))
-                .thenReturn(Maybe.just(schema))
-                .thenReturn(Maybe.just(schemaV2));
+                .thenReturn(Maybe.just(schema));
         when(schemaService.register(namespace, schema)).thenReturn(Single.just(2));
         when(securityService.username()).thenReturn(Optional.of("test-user"));
         when(securityService.hasRole(ResourceBasedSecurityRule.IS_ADMIN)).thenReturn(false);
@@ -125,9 +120,7 @@ void applyUnchanged() {
         when(namespaceService.findByName("myNamespace")).thenReturn(Optional.of(namespace));
         when(schemaService.isNamespaceOwnerOfSubject(namespace, schema.getMetadata().getName())).thenReturn(true);
         when(schemaService.validateSchemaCompatibility("local", schema)).thenReturn(Single.just(List.of()));
-        when(schemaService.getLatestSubject(namespace, schema.getMetadata().getName()))
-                .thenReturn(Maybe.just(schema))
-                .thenReturn(Maybe.just(schema));
+        when(schemaService.getLatestSubject(namespace, schema.getMetadata().getName())).thenReturn(Maybe.just(schema));
         when(schemaService.register(namespace, schema)).thenReturn(Single.just(1));
 
         schemaController.apply("myNamespace", schema, false)