---
title: "generate barcode · RUAL Documentation"
description: "This block is used to request a PostNL barcode for a shipment."
canonical: https://docs.rual.nl/block-types/shipping/postnlconnection_barcode_request
language: en
---

# generate barcode

This block is part of the [`shipping`](https://docs.rual.nl/block-types/shipping) group and was last modified in core [`v13.0.9`](https://docs.rual.nl/core-versions/130009).

This block is used to request a PostNL barcode for a shipment.

- flow `flow`

- Connection required `postnlconnection` The PostNL connection.

- Barcode Type required `value` The type of the barcode you want to request.

- Barcode Serie `value` The serie of the barcode you want to request.

Default `0000000-9999999`

- flow `flow`

- Connection `postnlconnection` The PostNL connection

- Success `condition` If successful, return true.

- Barcode `value` The generated PostNL barcode.

- Request response `object` The response from PostNL.

- Error `value` Error message if the barcode could not be requested.

A typical wiring for [generate barcode](https://docs.rual.nl/block-types/shipping/postnlconnection_barcode_request): a [function trigger](https://docs.rual.nl/block-types/globals/trigger_custom_function) starts the flow; [open connection](https://docs.rual.nl/block-types/shipping/postnlconnection_open) feeds the `connection` pin; [value](https://docs.rual.nl/block-types/value/value_default) feeds the `barcode_type` pin; the `flow` out pin feeds [debug](https://docs.rual.nl/block-types/state%20ui/state_debug).

![Studio canvas example for the generate barcode block: typical wiring for generate barcode.](https://docs.rual.nl/canvas-examples/postnlconnection_barcode_request.png)

### Version history

Introduced in [`v13.0.9`](https://docs.rual.nl/core-versions/130009).