diff --git a/src/openapi/orders/orders-crud.yaml b/src/openapi/orders/orders-crud.yaml
index dea8b44..8494dd8 100644
--- a/src/openapi/orders/orders-crud.yaml
+++ b/src/openapi/orders/orders-crud.yaml
@@ -169,7 +169,7 @@ paths:
                               "externalOrderLineId": "f5fddff0-7fbd-4285-bccb-e584f431ea69",
                               "productId": 1,
                               "productName": "HTM Maandkorting 20%",
-                              "productCode": "HTM-MND-20",
+                              "fikoArticleNumber": "FIKO-1234",
                               "productDescription": "HTM Maandkorting 20%",
                               "taxAmount": 21,
                               "taxCode": "V21",
@@ -341,7 +341,7 @@ paths:
                       "externalOrderLineId": "f5fddff0-7fbd-4285-bccb-e584f431ea69",
                       "productId": 1,
                       "productName": "HTM Maandkorting 20%",
-                      "productCode": "HTM-MND-20",
+                      "fikoArticleNumber": "FIKO-1234",
                       "productDescription": "HTM Maandkorting 20%",
                       "taxAmount": 21,
                       "taxCode": "V21",
@@ -512,7 +512,7 @@ paths:
                         "externalOrderLineId": "f5fddff0-7fbd-4285-bccb-e584f431ea69",
                         "productId": 1,
                         "productName": "HTM Maandkorting 20%",
-                        "productCode": "HTM-MND-20",
+                        "fikoArticleNumber": "FIKO-1234",
                         "productDescription": "HTM Maandkorting 20%",
                         "taxAmount": 21,
                         "taxCode": "V21",
@@ -732,7 +732,7 @@ paths:
                 "externalOrderLineId": "f5fddff0-7fbd-4285-bccb-e584f431ea69",
                 "productId": 1,
                 "productName": "HTM Maandkorting 20%",
-                "productCode": "HTM-MND-20",
+                "fikoArticleNumber": "FIKO-1234",
                 "productDescription": "HTM Maandkorting 20%",
                 "taxAmount": 21,
                 "taxCode": "V21",
@@ -926,10 +926,10 @@ paths:
           required: false
           description: The name of the product.
         - in: query
-          name: productCode
+          name: fikoArticleNumber
           schema:
             type: string
-            example: HTM-MND-20
+            example: FIKO-1234
           required: false
           description: The code of the product.
         - in: query
@@ -1064,7 +1064,7 @@ paths:
                     "externalOrderLineId": "4e333615-6ecd-4b68-a4f8-4f66f6af9be1",
                     "productId": 1,
                     "productName": "HTM Maandkorting 20%",
-                    "productCode": "HTM-MND-20",
+                    "fikoArticleNumber": "FIKO-1234",
                     "productDescription": "HTM Maandkorting 20%",
                     "taxAmount": 21,
                     "taxCode": "V21",