> ## Documentation Index > Fetch the complete documentation index at: https://docs.volteras.com/llms.txt > Use this file to discover all available pages before exploring further. # Update Registration Plate > Update the registration plate of the specified vehicle. **Parameters:** - `vehicle_id`: The unique identifier (ID) of the vehicle to update. **Returns:** - A response containing the updated vehicle information. **Note:** - The `vehicle_id` should correspond to a valid and existing vehicle identifier. Possible Codes in Error Response (see [Errors](https://docs.volteras.com/api-reference/errors) for error response schema and meaning of codes): - AUTHENTICATION_ERROR - REQUEST_VALIDATION_ERROR - RESOURCE_NOT_FOUND - SERVER_ERROR ## OpenAPI ````yaml post /v1/vehicles/{vehicle_id}/registration-plate openapi: 3.1.0 info: title: VOLTERAS CONNECT version: 0.1.0 servers: - url: https://api.volteras.com - url: https://api.sandbox.volteras.com security: [] paths: /v1/vehicles/{vehicle_id}/registration-plate: post: tags: - Vehicles summary: Update Registration Plate description: >- Update the registration plate of the specified vehicle. **Parameters:** - `vehicle_id`: The unique identifier (ID) of the vehicle to update. **Returns:** - A response containing the updated vehicle information. **Note:** - The `vehicle_id` should correspond to a valid and existing vehicle identifier. Possible Codes in Error Response (see [Errors](https://docs.volteras.com/api-reference/errors) for error response schema and meaning of codes): - AUTHENTICATION_ERROR - REQUEST_VALIDATION_ERROR - RESOURCE_NOT_FOUND - SERVER_ERROR operationId: >- update_registration_plate_v1_vehicles__vehicle_id__registration_plate_post parameters: - name: vehicle_id in: path required: true schema: type: string title: Vehicle ID description: Unique internal identifier for the vehicle. description: Unique internal identifier for the vehicle. requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/VehicleUpdateRegistration' responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/Vehicle' security: - OAuth2ClientCredentialsBearer: - vehicle:information components: schemas: VehicleUpdateRegistration: properties: registrationPlate: anyOf: - type: string maxLength: 50 minLength: 1 - type: 'null' title: Registrationplate type: object required: - registrationPlate title: VehicleUpdateRegistration Vehicle: properties: make: type: string title: Make description: Manufacturer of the vehicle. model: anyOf: - type: string - type: 'null' title: Model description: >- Subcategory of the make, used to differentiate between different variations of a vehicle within the same make. trim: anyOf: - type: string - type: 'null' title: Trim description: >- Subcategory of the model, used to differentiate between different variations of a vehicle within the same model. Also referred to as version or generation. modelYear: anyOf: - type: string - type: 'null' title: Modelyear description: >- Year the vehicle model was released. Could be different than the year the vehicle was manufactured. vin: type: string title: Vin description: Vehicle identification number. Unique identifier for the vehicle. registrationPlate: anyOf: - type: string - type: 'null' title: Registrationplate description: >- Plate that is attached to a vehicle and displays a unique combination of letters and numbers assigned to the vehicle by a government agency. Also referred to as license plate or registration number. isRegNoValidated: anyOf: - type: boolean - type: 'null' title: Isregnovalidated description: Indicates whether the registration plate has been validated regNoValidatedAt: anyOf: - type: string format: date-time - type: 'null' title: Regnovalidatedat description: Timestamp of when the registration plate was last validated id: type: string title: Id description: Unique internal identifier for the vehicle. metadata: $ref: '#/components/schemas/VehicleMetaData' description: Additional information about the vehicle. isListening: type: boolean title: Islistening description: >- Indicates whether the vehicle is currently accepting data ingestion and commands. Defaults to True when no listening state entries have been recorded. default: true listeningLastUpdated: anyOf: - type: string format: date-time - type: 'null' title: Listeninglastupdated description: >- UTC timestamp for the most recent listening-state update, or null when no entries exist. connectionStatus: anyOf: - type: string - type: 'null' title: Connectionstatus description: >- Connection status of the vehicle (e.g. CONNECTED, PENDING_CONNECTION, DISCONNECTED). connectionErrorCode: anyOf: - type: string - type: 'null' title: Connectionerrorcode description: Error code if the vehicle has a connection issue. connectionErrorMessage: anyOf: - type: string - type: 'null' title: Connectionerrormessage description: Human-readable error message for connection issues. actionCategory: anyOf: - type: string - type: 'null' title: Actioncategory description: >- Who must act on the connection error: CUSTOMER_ACTION, CONTACT_SUPPORT, or UNDER_REVIEW. type: object required: - make - vin - id - metadata title: Vehicle VehicleMetaData: properties: lastSeenAt: anyOf: - type: string format: date-time - type: 'null' title: Lastseenat description: >- The last recorded interaction with the vehicle endpoints. This is a timestamp in ISO 8601 format: YYYY-MM-DDThh:mm:ssTZD. consentId: anyOf: - type: string - type: 'null' title: Consentid description: >- Unique identifier for the consent that was used to retrieve the vehicle data. accountId: anyOf: - type: string - type: 'null' title: Accountid description: >- Unique identifier for the account that was used to retrieve the vehicle data. registrationDate: anyOf: - type: string format: date - type: 'null' title: Registrationdate description: >- Vehicle registration date (ISO 8601, day granularity). Captured at vehicle upload; used as the date-axis baseline for service-interval alerts. type: object required: - lastSeenAt - consentId - accountId title: VehicleMetaData securitySchemes: OAuth2ClientCredentialsBearer: type: oauth2 flows: clientCredentials: scopes: {} tokenUrl: /v1/oauth2/token ````