diff --git a/src/openapi/orders/orders-crud.yaml b/src/openapi/orders/orders-crud.yaml
index fba9e39..a095c3c 100644
--- a/src/openapi/orders/orders-crud.yaml
+++ b/src/openapi/orders/orders-crud.yaml
@@ -616,6 +616,44 @@ paths:
               schema:
                 $ref: "#/components/schemas/unavailable"
               example: { "orderId": "afce35b2-1dff-4ace-98d0-4b9ac405c87d" }
+  /orders/{orderId}/statuses:
+    parameters:
+      - in: path
+        name: orderId
+        schema:
+          type: string
+          format: uuid
+          example: d1dd439b-6072-4b97-89c9-724268865b93
+        required: true
+        description: The id of the order to process.
+    post:
+      summary: Add an order status.
+      description: Add an order status.
+      tags:
+        - Order
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/unavailable"
+            example:
+              {
+                "orderStatusId": 1,
+                "createdOn": "2024-03-22T09:00:00",
+                "description": "Order verzonden",
+              }
+      responses:
+        "201":
+          description: Created
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/unavailable"
+              example:
+                {
+                  "order_orderStatusId": "b9cf0096-4211-4be6-ac21-7bc34bc8e066",
+                }
+
   /orders/{orderId}/orderlines:
     parameters:
       - in: path
@@ -694,6 +732,64 @@ paths:
               schema:
                 $ref: "#/components/schemas/unavailable"
               example: { "orderLineId": "1e441d7d-50d6-4006-aca7-5e87e2f218df" }
+  /orders/{orderId}/payments:
+    parameters:
+      - in: path
+        name: orderId
+        schema:
+          type: string
+          format: uuid
+          example: d1dd439b-6072-4b97-89c9-724268865b93
+        required: true
+        description: The id of the order to process.
+    post:
+      summary: Add one or more payments to an order.
+      description: Add one or more payments to an order.
+      tags:
+        - Payment
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/unavailable"
+            example:
+              [
+                {
+                  "createdOn": "2024-03-22T09:00:00",
+                  "amountDebit": 121,
+                  "paymentMethodId": 1,
+                  "touchPointId": 1,
+                  "isRefund": false,
+                  "htmPaymentReference": "HTM-1234",
+                  "pspPaymentReference": "Buckaroo-1234",
+                  "paymentStatuses":
+                    [
+                      {
+                        "createdOn": "2024-03-22T09:00:00",
+                        "statusCode": "190",
+                        "statusDescription": "Success",
+                        "statusSubCode": "S001",
+                        "statusSubDescription": "PaymentSuccessFul",
+                      },
+                    ],
+                  "mandateInput":
+                    {
+                      "mandateTypeId": 1,
+                      "createdOn": "2024-03-22T09:00:00",
+                      "bic": "RABONL2U",
+                      "iban": "NL44RABO0123456789",
+                      "ascription": "J. de Vries",
+                    },
+                },
+              ]
+      responses:
+        "201":
+          description: Created
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/unavailable"
+              example: { "paymentId": "dfae0f6f-95f0-4eac-ab1a-36ffe1f31aac" }
   /orderlines:
     get:
       summary: Find order lines.
@@ -848,6 +944,7 @@ paths:
                 [
                   {
                     "orderLineId": "7a7a9d1a-3fc8-4058-a28b-082860aaa311",
+                    "orderId": "7ec1c3ae-0112-4aaf-adb9-c2436234fec6",
                     "externalOrderLineId": "2ba39cae-c401-446b-ae5c-2d6d85b3df1f",
                     "productId": 1,
                     "productName": "HTM Maandkorting 20%",
@@ -934,6 +1031,188 @@ paths:
               schema:
                 $ref: "#/components/schemas/unavailable"
               example: { "orderLineId": "ee82686a-a9f6-4888-b336-8e2aab6f4e13" }
+  /payments:
+    get:
+      summary: Find payments.
+      description: Find payments.
+      tags:
+        - Payment
+      parameters:
+        - in: query
+          name: paymentId
+          schema:
+            type: string
+            format: uuid
+            example: 4ea492ff-8ffc-4a4e-901e-59f05e854285
+          required: false
+          description: The id of the payment.
+        - in: query
+          name: orderId
+          schema:
+            type: string
+            format: uuid
+            example: 292e5f86-cefc-4224-9506-d204ed3a426f
+          required: false
+          description: The id of the order where the payment belongs to.
+        - in: query
+          name: createdBefore
+          schema:
+            type: string
+            format: date-time
+            example: 2024-03-22T09:00:00
+          required: false
+          description: Timestamp before which the payment should have been created.
+        - in: query
+          name: createdAfter
+          schema:
+            type: string
+            format: date-time
+            example: 2024-03-22T09:00:00
+          required: false
+          description: Timestamp after which the payment should have been created.
+        - in: query
+          name: amountDebit
+          schema:
+            type: integer
+            example: 100
+          required: false
+          description: The amount of debit to pay.
+        - in: query
+          name: paymentMethodId
+          schema:
+            type: integer
+            example: 1
+          required: false
+          description: The technical id of the payment method used to pay.
+        - in: query
+          name: touchPointId
+          schema:
+            type: integer
+            example: 1
+          required: false
+          description: The id of the touch point where the payment was initiated.
+        - in: query
+          name: isRefund
+          schema:
+            type: boolean
+            example: false
+          required: false
+          description: If the payment concerns a refund or not.
+        - in: query
+          name: htmPaymentReference
+          schema:
+            type: string
+            example: HTM-1234
+          required: false
+          description: The payment reference on HTM side.
+        - in: query
+          name: pspPaymentReference
+          schema:
+            type: string
+            example: Buckaroo-1234
+          required: false
+          description: The payment reference on PSP side.
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/unavailable"
+              example:
+                [
+                  {
+                    "paymentId": "3ba4a3c7-0803-4214-800b-365851b8903d",
+                    "orderId": "afa89108-3e40-44ac-8bea-7c7f0f2d4006",
+                    "createdOn": "2024-03-22T09:00:00",
+                    "amountDebit": 121,
+                    "paymentMethod":
+                      {
+                        "paymentMethodId": 1,
+                        "name": "ideal",
+                        "provider": "Buckaroo",
+                      },
+                    "touchPointId": 1,
+                    "isRefund": false,
+                    "htmPaymentReference": "HTM-1234",
+                    "pspPaymentReference": "Buckaroo-1234",
+                    "paymentStatuses":
+                      [
+                        {
+                          "paymentStatusId": 1,
+                          "createdOn": "2024-03-22T09:00:00",
+                          "statusCode": "190",
+                          "statusDescription": "Success",
+                          "statusSubCode": "S001",
+                          "statusSubDescription": "PaymentSuccessFul",
+                        },
+                      ],
+                    "mandateInput":
+                      {
+                        "mandateInputId": "0a875e67-dc9f-4825-a030-d732a2adbfbc",
+                        "mandateType": { "mandateTypeId": 1, "name": "import" },
+                        "createdOn": "2024-03-22T09:00:00",
+                        "bic": "RABONL2U",
+                        "iban": "NL44RABO0123456789",
+                        "ascription": "J. de Vries",
+                      },
+                  },
+                ]
+  /payments/{paymentId}:
+    patch:
+      summary: Update a payment.
+      description: Update a payment.
+      tags:
+        - Payment
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/unavailable"
+            example:
+              {
+                "htmPaymentReference": "HTM-1234",
+                "pspPaymentReference": "Buckaroo-1234",
+              }
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/unavailable"
+              example: { "paymentId": "dbbc3913-414e-4528-9c95-6c11a11e04ac" }
+  /payments/{paymentId}/paymentstatuses:
+    post:
+      summary: Add a payment status.
+      description: Add a payment status.
+      tags:
+        - Payment
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/unavailable"
+            example:
+              {
+                "createdOn": "2024-03-22T09:00:00",
+                "statusCode": "190",
+                "statusDescription": "Success",
+                "statusSubCode": "S001",
+                "statusSubDescription": "PaymentSuccessFul",
+              }
+      responses:
+        "201":
+          description: Created
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/unavailable"
+              example:
+                {
+                  "paymentId": "f3919c07-8fa1-4ff4-a4a6-8f99106b9129",
+                  "paymentStatusId": 2,
+                }
 components:
   securitySchemes:
     bearerToken: