diff --git a/src/openapi/customers/SE-customers.yaml b/src/openapi/customers/SE-customers.yaml
index 59c15f8..69cae4c 100644
--- a/src/openapi/customers/SE-customers.yaml
+++ b/src/openapi/customers/SE-customers.yaml
@@ -2209,7 +2209,7 @@ paths:
           content:
             application/json:
               schema:
-                $ref: "#/components/schemas/OvPayTokenProductInstancesResponse"
+                $ref: "#/components/schemas/ProductInstancesResponse"
               examples:
                 getEmptyProductInstances:
                   summary: No product-instances found on token
@@ -3440,14 +3440,14 @@ paths:
           content:
             application/json:
               schema:
-                $ref: "#/components/schemas/unavailable"
+                $ref: "#/components/schemas/ProductInstancesResponse"
               examples:
                 getEmptyProductInstances:
                   summary: No product-instances found for devi
                   value:
                     productInstances: []
                 getSingleProductInstance:
-                  summary: One non-renewable product-instance
+                  summary: One TapConnect product-instance
                   value:
                     {
                       "productInstances":
@@ -3986,20 +3986,39 @@ components:
                       method:
                         type: string
                         example: GET
-    OvPayTokenProductInstancesResponse:
+    ProductInstancesResponse:
       type: object
+      required:
+        - productInstances
       properties:
         productInstances:
           type: array
           items:
             type: object
+            required:
+              - productInstanceId
+              - productId
+              - name
+              - status
+              - purchasedProductType
+              - isRenewable
+              - productCategory
+              - _links
             properties:
+              productInstanceId:
+                type: string
+                format: uuid
+                example: 0f0981bf-6d60-4b06-bc55-de1ba325f366
               productId:
                 type: integer
                 example: 1
               name:
                 type: string
                 example: HTM 90% Korting
+              purchasedProductType:
+                type: string
+                description: The type of product instance (e.g. GBO, TapConnect, physical, etc.)
+                example: GBO
               status:
                 type: string
                 enum: ["Active", "Ended", "Refunded"]
@@ -4040,6 +4059,10 @@ components:
                 format: uuid
                 example: 56B17EF-C436-9043-B76C-481797WEB464F
                 description: Only present for subscriptions/contracts
+              content:
+                type: object
+                description: Custom data for the product-instance, depending on the purchasedProductType
+                example: null
               _links:
                 type: object
                 properties:
@@ -4054,21 +4077,31 @@ components:
                         example: GET
                   get_order:
                     type: object
+                    description: Always present for any HTM product-instance
                     properties:
                       href:
                         type: string
-                        description: Always present for any HTM product-instance
                         example: https://api.integratielaag.nl/abt/touchpoint/1.0/orders/501B17EF-36C4-4039-B92C-6517969B464E
                       method:
                         type: string
                         example: GET
                   get_contract:
                     type: object
+                    description: Only present for subscriptions/contracts
                     properties:
                       href:
                         type: string
-                        description: Only present for subscriptions/contracts
                         example: https://api.integratielaag.nl/abt/touchpoint/1.0/customers/contracts/56B17EF-C436-9043-B76C-481797WEB464F
                       method:
                         type: string
                         example: GET
+                  patch_productinstance:
+                    type: object
+                    description: Only present for TapConnect product-instances that need to be activated
+                    properties:
+                      href:
+                        type: string
+                        example: https://api.integratielaag.nl/abt/touchpoint/1.0/customers/productinstances/0f0981bf-6d60-4b06-bc55-de1ba325f366
+                      method:
+                        type: string
+                        example: PATCH