> ## Documentation Index > Fetch the complete documentation index at: https://developer.easyparkgroup.com/llms.txt > Use this file to discover all available pages before exploring further. # Get cars for a Billing Account > Returns all cars (license numbers) associated with the billing account, paginated. License numbers are sorted alphabetically. ## OpenAPI ````yaml get /api/billing-accounts/{baId}/cars openapi: 3.1.0 info: title: Partner API description: > The Partner API provides a suite of endpoints designed to help partners and customers to manage users, vehicles and billing records seamlessly. Note: These endpoints are currently available in Europe, with expansion to new regions planned for 2026. ## Getting started & onboarding To begin integrating with our endpoints, you will need access to our environments. Please follow these steps: 1. Request access: Contact us at api-developer-portal@arrive.com or reach out to your designated point of contact. 1. Testing & Staging: Once registered, you will be provided with credentials for our Staging environment. This allows you to test your integration end-to-end in a safe, isolated environment. 1. Production: After successful testing in Staging, your point of contact will guide you through the promotion to the Production environment. Requests and responses are in JSON format. ## Request timeout All the endpoints have a default timeout of 60 seconds. ## Errors All errors match the standard response for errors as defined by the Problem Details for HTTP APIs specification RFC 9457: ```json { "type": "https://developer.easyparkgroup.com/openapi/fleet/overview/", "title": "Forbidden", "status": 403, "detail": "Access denied", "instance": "/api/billing-accounts", "timestamp": 1771232045624, "traceId": "55a47f36-cea3-4b01-92b6-8295c02ac302" } ``` version: '2026.01' servers: - url: https://fleet.staging.ezprk.dev description: Staging - url: https://fleet.europe.ezprk.net description: Production security: [] tags: - name: Billing Accounts description: Query Billing Accounts and their Billing Info Records. - name: Login description: Authenticate with the EasyPark API - name: Cars allowlist description: > Cars allowlist allows partners and customers to manage which vehicles are permitted to park under an account. By maintaining an allowlist of approved vehicles, you ensure that only authorized cars can be associated with a fleet. ## Two allowlist modes The API functionality supports two modes, and the right one depends on how your integration is structured: **Global allowlist** — A single allowlist applies across all customers connected to your integration. Any vehicle added to the allowlist is permitted for all customers under that integration. Use this if you manage a unified fleet and want one centralized list of approved vehicles. **Single Billing Account allowlist** — Each customer connected to your integration has their own individual allowlist. Vehicles must be added per customer, and a vehicle permitted for one customer is not automatically permitted for others. Use this if you manage multiple customers with distinct fleets that should remain separated. If you are unsure which mode applies to your integration, check with the team that set up your API access — the mode is defined at the integration level. paths: /api/billing-accounts/{baId}/cars: get: tags: - Cars allowlist summary: Get cars for a Billing Account description: > Returns all cars (license numbers) associated with the billing account, paginated. License numbers are sorted alphabetically. operationId: getBillingAccountCars parameters: - name: baId in: path description: Billing account ID required: true schema: type: integer format: int64 - name: page in: query description: Zero-based page index (0..N) schema: type: integer default: 0 - name: size in: query description: The size of the page to be returned schema: type: integer default: 20 responses: '200': description: Returns a paginated list of cars allowed for the billing account content: '*/*': schema: $ref: '#/components/schemas/PagedModelBillingAccountCarResponse' '400': description: Invalid request parameters content: '*/*': schema: $ref: '#/components/schemas/ErrorResponseSchema' '401': description: Missing or invalid JWT content: '*/*': schema: $ref: '#/components/schemas/ErrorResponseSchema' '403': description: Insufficient permissions content: '*/*': schema: $ref: '#/components/schemas/ErrorResponseSchema' '404': description: Billing account not found content: '*/*': schema: $ref: '#/components/schemas/ErrorResponseSchema' security: - jwt: [] components: schemas: PagedModelBillingAccountCarResponse: type: object properties: content: type: array items: $ref: '#/components/schemas/BillingAccountCarResponse' page: $ref: '#/components/schemas/PageMetadata' ErrorResponseSchema: type: object description: RFC 9457 Problem Details error response properties: type: type: string description: URI reference identifying the problem type example: https://developer.easyparkgroup.com/openapi/fleet/overview/ title: type: string description: Short, human-readable summary of the problem example: Forbidden status: type: integer format: int32 description: HTTP status code example: 403 detail: type: string description: Human-readable explanation specific to this occurrence example: Access denied instance: type: string description: URI reference identifying the specific occurrence example: /api/billing-accounts timestamp: type: integer format: int64 description: Unix epoch milliseconds when the error occurred example: 1771232045624 traceId: type: string description: Trace ID for correlating logs example: 55a47f36-cea3-4b01-92b6-8295c02ac302 BillingAccountCarResponse: type: object properties: licenseNumber: type: string PageMetadata: type: object properties: size: type: integer format: int64 number: type: integer format: int64 totalElements: type: integer format: int64 totalPages: type: integer format: int64 securitySchemes: jwt: type: http description: You can get the JWT from the Login endpoint scheme: bearer bearerFormat: Bearer JWT ````