# Accounting Systems

Your Customer can either choose their Accounting System in the Onboarding Flow or be sent directly to a specific one. Build the URL using [URL and parameters](/onboarding-flow/url-and-parameters.md).

### Let them choose their Accounting System

If you want Your Customer to pick from the systems you support, use the standard Onboarding Flow URL. They will see a screen to choose any of the [supported systems](#supported-systems):

```
https://onboarding.zwapgrid.com/consent/<Consent ID>/?otc=<one-time-code>
```

### Direct link to a specific Accounting System

To send Your Customer straight to a specific Accounting System (or build your own system picker in Your Platform), deep link by adding the system ID to the path:

```
https://onboarding.zwapgrid.com/consent/<Consent ID>/<Accounting System>/?otc=<one-time-code>
```

Replace **Consent ID** and **Accounting System** with your values. Use the IDs in the [Supported Systems](#supported-systems) table below.

{% hint style="warning" %}
With this approach, you must create links to all of the accounting systems that you wish to offer support for.
{% endhint %}

### Supported Systems

You can use any of the IDs in the table below in the Onboarding Flow if you wish to invite Your Customer directly to a specific Accounting System.

| Accounting System | ID               |
| ----------------- | ---------------- |
| Test.1            | testone          |
| File.1            | fileone          |
| Fortnox           | fortnox          |
| Visma eAccounting | vismaeaccounting |
| Björn Lundén      | bjornlunden      |
| Visma e‑conomic   | vismaeconomic    |
| Billy             | billy            |
| Visma Dinero      | vismadinero      |
| Procountor        | procountor       |
| Visma Netvisor    | vismanetvisor    |
| Tripletex         | tripletex        |
| Business Central  | businesscentral  |


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