diff --git a/src/openapi/orders/SE-orders-gboAgeProfile.yaml b/src/openapi/orders/SE-orders-gboAgeProfile.yaml
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+++ b/src/openapi/orders/SE-orders-gboAgeProfile.yaml
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+openapi: 3.0.1
+info:
+  title: ABT Service Engine Order APIs
+  version: "1.0"
+  description: Order APIs available in the Service Engine for order validation and fulfillment.
+servers:
+  - url: https://api.integratielaag.nl/abt/abtserviceengine/1.0
+paths:
+  /orders/validation/gboAgeProfile:
+    get:
+      tags:
+        - ServiceEngine Order validation
+      summary: Get GBO age profile that is valid for the given input
+      description: |-
+        Only one age profile can be valid at any one time, so only one profile is returned.
+      parameters:
+        - name: productStartDate
+          in: query
+          required: true
+          description: Start date of product validity
+          schema:
+            type: string
+            format: date
+            example: 2025-03-20
+        - name: birthDate
+          in: query
+          required: false
+          description: Birthdate of the OVpay-token holder
+          schema:
+            type: string
+            format: date
+            example: 2000-01-01
+        - name: ovPayTokenId
+          in: query
+          required: false
+          description: ovPayTokenId of the customer's selected token
+          schema:
+            type: integer
+            example: 1
+        - name: customerTokenId
+          in: query
+          required: false
+          description: customerTokenId of the customer's selected token
+          schema:
+            type: string
+            format: uuid
+            example: "4a2d2c9c-1e5d-4d8a-9c0a-6c0a6c0a6c0a"
+        - name: serviceReferenceId
+          in: query
+          required: false
+          description: serviceReferenceId of the customer's selected token
+          schema:
+            type: string
+            example: "NLOV1234567ABCDEFG"
+        - name: amount
+          in: query
+          required: false
+          description: amount belonging to the serviceReferenceId
+          schema:
+            type: integer
+            example: 100
+        - name: ovpasNumber
+          in: query
+          required: false
+          description: OVpas number of the customer's selected token
+          schema:
+            type: string
+            example: "63AW974"
+        - name: verificationCode
+          in: query
+          required: false
+          description: verification code belonging to the OVpas number
+          schema:
+            type: string
+            example: 1A3C7D        
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/GboAgeProfileResponse"
+
+        "400":
+          description: Bad request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/rfc9457Response"
+              examples:
+                Missing parameter(s):
+                  summary: Missing parameter(s)
+                  value:
+                    {
+                      "type": "https://www.htm.nl/api/v1/400Error",
+                      "title": "Missing parameter(s)",
+                      "detail": "At least one of the following parameters must be present: birthDate, ovPayTokenId, customerTokenId, (serviceReferenceId and amount), (ovpasNumber and verificationCode)",
+                      "instance": "urn:uuid:13c8416f-7632-4c8b-8a16-2132197be60c",
+                      "apiErrorCode": "htm.api.err.400.2",
+                    }
+                Invalid date format:
+                  summary: Invalid date format
+                  value:
+                    {
+                      "type": "https://www.htm.nl/api/v1/400Error",
+                      "title": "Invalid input",
+                      "detail": "The given birthDate is not a valid Date format",
+                      "instance": "urn:uuid:13c8416f-7632-4c8b-8a16-2132197be60c",
+                      "apiErrorCode": "htm.api.err.400.3",
+                    }
+        "404":
+          description: Not found
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/rfc9457Response"
+              examples:
+                No birthdate present in PAD of OVpay token:
+                  summary: No birthdate present in PAD of OVpay token
+                  value:
+                    {
+                      "type": "https://www.htm.nl/api/v1/404Error",
+                      "title": "Missing birthdate in PAD",
+                      "detail": "There is no birthdate present in the PAD of the OVpay token, or there is no PAD present at all",
+                      "instance": "urn:uuid:13c8416f-7632-4c8b-8a16-2132197be60c",
+                      "apiErrorCode": "htm.api.err.404.1",
+                    }
+components:
+  schemas:
+    GboAgeProfileResponse:
+      type: object
+      required:
+        - gboAgeProfileId
+        - name
+        - ageFromInclusive
+        - ageToInclusive
+      properties:
+        gboAgeProfileId:
+          type: integer
+          example: 1
+        name:
+          type: string
+          example: Kind (4 t/m 11 jaar)
+        ageFromInclusive:
+          type: integer
+          example: 4
+        ageToInclusive:
+          type: integer
+          example: 11
+    rfc9457Response:
+      type: object
+      properties:
+        type:
+          type: string
+          format: url
+          example: "https://www.htm.nl/api/v1/rfc9457Error"
+        title:
+          type: string
+          description: "Short summary of the error."
+          example: "The request is not valid."
+        detail:
+          type: string
+          description: "More detailed descriptionof the error."
+          example: "Some required parameters are missing."
+        instance:
+          type: string
+          description: "Unique identifier to correlate this specific error with logging in other applications."
+          example: "urn:uuid:13c8416f-7632-4c8b-8a16-2132197be60c"
+        additionalProperty1:
+          type: string
+          description: "Example of an additional property value to be used for error reporting."
+          example: "additionalValue1"
+        additionalProperty2:
+          type: array
+          description: "Example of an additional property array to be used for error reporting."
+          items:
+            type: string
+            example:
+              - "additionalValue2-1"
+              - "additionalValue2-2"