diff --git a/components/schemas/infrastructure/external-volumes/rootTasks/ExternalVolumesScanAction.yml b/components/schemas/infrastructure/external-volumes/rootTasks/ExternalVolumesScanAction.yml
index 7f66fe5d..be2ed70e 100644
--- a/components/schemas/infrastructure/external-volumes/rootTasks/ExternalVolumesScanAction.yml
+++ b/components/schemas/infrastructure/external-volumes/rootTasks/ExternalVolumesScanAction.yml
@@ -3,6 +3,7 @@ description: A task to scan for available external volumes on a given cluster.
 type: object
 required:
   - action
+  - contents
 properties:
   action:
     type: string
@@ -14,8 +15,21 @@ properties:
     description: Scan options used by the platform to create the job.
     required:
       - cluster
+      - type
+      - integration_id
     properties:
-      cluster:
+      integration_id:
+        description: ID of the integration to scan for external volumes.
+        $ref: ../../../ID.yml
+      type:
+        description: Type of external volume system to scan.
         type: string
-        description: |
-          ID of the cluster to scan for external volumes.
+        enum: [san-iscsi, ceph-rbd, aws-ebs]
+      cluster:
+        description: ID of the cluster to scan for external volumes.
+        $ref: ../../../Identifier.yml
+      server_ids:
+        description: Optional list of server IDs to limit the scan scope.
+        type: array
+        items:
+          $ref: ../../../ID.yml