diff --git a/opencti-platform/opencti-graphql/src/modules/playbook/playbook-components.ts b/opencti-platform/opencti-graphql/src/modules/playbook/playbook-components.ts
index 88d1cbf246ae..665001d02562 100644
--- a/opencti-platform/opencti-graphql/src/modules/playbook/playbook-components.ts
+++ b/opencti-platform/opencti-graphql/src/modules/playbook/playbook-components.ts
@@ -1257,13 +1257,13 @@ const PLAYBOOK_CREATE_OBSERVABLE_COMPONENT: PlaybookComponent<CreateObservableCo
           if (indicator.object_marking_refs) {
             stixObservable.object_marking_refs = indicator.object_marking_refs;
           }
-          if (indicator.created_by_ref) {
+          if (indicator.created_by_ref && stixObservable.extensions[STIX_EXT_OCTI_SCO]) {
             stixObservable.extensions[STIX_EXT_OCTI_SCO].created_by_ref = indicator.created_by_ref;
           }
-          if (indicator.labels) {
+          if (indicator.labels && stixObservable.extensions[STIX_EXT_OCTI_SCO]) {
             stixObservable.extensions[STIX_EXT_OCTI_SCO].labels = indicator.labels;
           }
-          if (indicator.external_references) {
+          if (indicator.external_references && stixObservable.extensions[STIX_EXT_OCTI_SCO]) {
             stixObservable.extensions[STIX_EXT_OCTI_SCO].external_references = indicator.external_references;
           }
           if (granted_refs) {
diff --git a/opencti-platform/opencti-graphql/src/types/stix-common.d.ts b/opencti-platform/opencti-graphql/src/types/stix-common.d.ts
index d4735d43dc95..f5dbaca46649 100644
--- a/opencti-platform/opencti-graphql/src/types/stix-common.d.ts
+++ b/opencti-platform/opencti-graphql/src/types/stix-common.d.ts
@@ -105,12 +105,12 @@ interface StixRelationshipObject extends StixObject {
 
 // SCO
 interface CyberObjectExtension {
-  extension_type : 'property-extension',
-  labels: Array<string>;
-  description: string;
-  score: number;
-  created_by_ref: StixId | undefined;
-  external_references: Array<StixInternalExternalReference>;
+  extension_type? : 'property-extension';
+  labels?: Array<string>;
+  description?: string;
+  score?: number;
+  created_by_ref?: StixId;
+  external_references?: Array<StixInternalExternalReference>;
 }
 
 interface StixCyberObject extends StixObject {
@@ -119,7 +119,7 @@ interface StixCyberObject extends StixObject {
   x_opencti_score?: number; // optional
   extensions: {
     [STIX_EXT_OCTI]: StixOpenctiExtension;
-    [STIX_EXT_OCTI_SCO]: CyberObjectExtension
+    [STIX_EXT_OCTI_SCO]?: CyberObjectExtension
   };
 }
 
diff --git a/opencti-platform/opencti-graphql/src/types/stix-sco.d.ts b/opencti-platform/opencti-graphql/src/types/stix-sco.d.ts
index 9bebafa1bd68..f493d4ebfd6e 100644
--- a/opencti-platform/opencti-graphql/src/types/stix-sco.d.ts
+++ b/opencti-platform/opencti-graphql/src/types/stix-sco.d.ts
@@ -390,7 +390,7 @@ export interface StixNetworkTraffic extends StixCyberObject {
   encapsulated_by_ref: StixId | undefined; // optional
   extensions: {
     [STIX_EXT_OCTI]: StixOpenctiExtension
-    [STIX_EXT_OCTI_SCO]: CyberObjectExtension
+    [STIX_EXT_OCTI_SCO]?: CyberObjectExtension
     // HTTP Request Extension
     'http-request-ext'?: {
       request_method: string;
@@ -445,7 +445,7 @@ export interface StixProcess extends StixCyberObject {
   child_refs: Array<StixId>; // optional
   extensions: {
     [STIX_EXT_OCTI]: StixOpenctiExtension
-    [STIX_EXT_OCTI_SCO]: CyberObjectExtension
+    [STIX_EXT_OCTI_SCO]?: CyberObjectExtension
     // Windows™ Process Extension
     'windows-process-ext': {
       aslr_enabled: boolean; // optional
@@ -510,7 +510,7 @@ export interface StixUserAccount extends StixCyberObject {
   account_last_login: StixDate; // optional
   extensions: {
     [STIX_EXT_OCTI]: StixOpenctiExtension
-    [STIX_EXT_OCTI_SCO]: CyberObjectExtension
+    [STIX_EXT_OCTI_SCO]?: CyberObjectExtension
     // UNIX™ Account Extension
     'unix-account-ext'?: {
       gid: number; // optional
diff --git a/opencti-platform/opencti-graphql/tests/02-integration/05-parser/csv-parser-test.ts b/opencti-platform/opencti-graphql/tests/02-integration/05-parser/csv-parser-test.ts
index f94b43e6a573..e8da04ee051d 100644
--- a/opencti-platform/opencti-graphql/tests/02-integration/05-parser/csv-parser-test.ts
+++ b/opencti-platform/opencti-graphql/tests/02-integration/05-parser/csv-parser-test.ts
@@ -184,9 +184,9 @@ describe('CSV-PARSER with dynamic mapping (aka different entity on one file)', (
 
     expect(firstIdentity.name).toBe('AlienVault');
     expect(firstIp.value).toBe('91.200.148.232');
-    expect(firstIp.extensions[STIX_EXT_OCTI_SCO].score).toBe(41);
+    expect(firstIp.extensions[STIX_EXT_OCTI_SCO]?.score).toBe(41);
     expect(firstUrl.value).toBe('http://requestrepo.com/r/2yxp98b3');
-    expect(firstUrl.extensions[STIX_EXT_OCTI_SCO].score).toBe(22);
+    expect(firstUrl.extensions[STIX_EXT_OCTI_SCO]?.score).toBe(22);
     expect(firstIdentity.name).toBe('AlienVault');
     expect(firstIdentity.identity_class).toBe('individual');
   });