diff --git a/src/openapi/orders/service_engine_orders.yaml b/src/openapi/orders/service_engine_orders.yaml
index 3c144ca..b7172a1 100644
--- a/src/openapi/orders/service_engine_orders.yaml
+++ b/src/openapi/orders/service_engine_orders.yaml
@@ -1369,6 +1369,31 @@ paths:
                 $ref: "#/components/schemas/unavailable"
               example:
                 { "orderCustomerId": "94270188-4cf6-447e-bd49-e8186bcec073" }
+  /orders/{orderId}/fulfill:
+    parameters:
+      - in: path
+        name: orderId
+        required: true
+        style: simple
+        explode: false
+        schema:
+          type: string
+          format: uuid
+          example: a0ef57fa-395c-4a03-96e9-234c26dccea9
+      - in: header
+        name: X-HM-JWT-AUTH-HEADER
+        schema:
+          type: string
+          example: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
+        description: The JWT of the logged in customer (in case of a web shop).
+    post:
+      tags:
+        - Order Fulfillment v2.1
+      summary: Fulfill an order without creating or updating the order as a resource.
+      description: Fulfill an order without creating or updating the order as a resource.
+      responses:
+        "200":
+          description: OK
 components:
   securitySchemes:
     bearerToken: