diff --git a/code/API_definitions/sim-swap-subscriptions.yaml b/code/API_definitions/sim-swap-subscriptions.yaml
index 910e8c4..36fd897 100644
--- a/code/API_definitions/sim-swap-subscriptions.yaml
+++ b/code/API_definitions/sim-swap-subscriptions.yaml
@@ -69,8 +69,6 @@ externalDocs:
   url: https://github.com/camaraproject/
 servers:
   - url: '{apiRoot}/sim-swap-subscriptions/vwip'
-
-
     variables:
       apiRoot:
         default: http://localhost:9091
@@ -367,9 +365,7 @@ components:
           description: The address to which events shall be delivered using the selected protocol.
           example: "https://endpoint.example.com/sink"
         sinkCredential:
-          allOf:
-            - description: A sink credential provides authentication or authorization information necessary to enable delivery of events to a target.
-            - $ref: "#/components/schemas/SinkCredential"
+          $ref: "#/components/schemas/SinkCredential"
         types:
           description: |
             Camara Event types eligible for subscription:
@@ -421,6 +417,7 @@ components:
           example: 2025-01-17T13:18:23.682Z
           description: The subscription expiration time (in date-time format) requested by the API consumer. Up to API project decision to keep it.
     SinkCredential:
+      description: A sink credential provides authentication or authorization information necessary to enable delivery of events to a target.
       type: object
       properties:
         credentialType: