diff --git a/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbs.yml b/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbs.yml
index 15211e42..e6cd2413 100644
--- a/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbs.yml
+++ b/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbs.yml
@@ -14,10 +14,12 @@ properties:
   details:
     type: object
     required:
-      - auth
+      - integration_id
       - volume
     properties:
-      auth:
-        $ref: "./SourceAwsEbsAuth.yml"
+      integration_id:
+        description: >
+          The ID of an AWS EBS integration for authentication.
+        $ref: ../../../../ID.yml
       volume:
         $ref: "./SourceAwsEbsRef.yml"
diff --git a/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbsRef.yml b/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbsRef.yml
index 052408d7..ad0c06b3 100644
--- a/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbsRef.yml
+++ b/components/schemas/infrastructure/external-volumes/sources/aws-ebs/SourceAwsEbsRef.yml
@@ -1,13 +1,11 @@
 title: SourceAwsEbsRef
 type: object
 description: Reference to the specific EBS volume to attach.
-required:
-  - volume_id
 properties:
   volume_id:
     type: string
     description: >
-      The EBS volume ID (for example, "vol-0abcd1234ef567890").
+      The EBS volume ID (for example, "vol-0abcd1234ef567890"). If left blank, the option `create` should be set on the external volume so that an ID is automatically assigned.
   az:
     type: string
     description: >