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How does the Yuki integration work?

Yuki is one of the accounting software packages that Robaws has a direct integration with.
Thanks to the API integration between Robaws and Yuki, these packages work together seamlessly.
You can prepare your entire bookkeeping from Robaws, so that it is taken over one to one in Yuki.

Jump straight to:

What it supports
How do I activate the integration?
Linking VAT tariffs
Importing GL accounts
Settings
Error messages

What this integration supports

The integration between Robaws and Yuki supports a great deal:

Export sales invoices and incoming invoices to Yuki
Sync the payment status of sales invoices and incoming invoices back to Robaws
Import GL accounts/synchronise them with Robaws

Activating the integration

To be able to use the API integration, the "Yuki Sales Webservice" module has to be activated in Yuki, or included in your bundle.

You activate the integration via settings > integrations > Yuki.
You go through the following steps:

Create a 'webservice key' in your Yuki portal. (You will find more information in the following article on Yuki's support site: Yuki webservice key article)
In Robaws, click on 'Add API key'
Choose the correct Yuki environment, Belgium or Netherlands
Enter the API Key and click on add
Choose from the list of available administrations
Click on 'connect with Yuki'

Once you have completed these steps, the integration with Robaws is in place. To export the invoices correctly, take the following steps as well:

set the Yuki settings correctly
link the VAT tariffs
import the GL accounts.

If you have several companies in Robaws, you can set up a separate integration for each company individually by clicking on 'default' in the top left of the settings.

API limit from Yuki: every domain has 1000 webservice calls per day available free of charge by default. This can be increased for a fee; ask Yuki about this.

Linking VAT tariffs

Certain VAT tariffs are active in your Robaws environment. These have to be linked to Yuki correctly.

In Robaws, go to settings > general > VAT tariffs > click a VAT tariff open
If Yuki is linked, you will see a link to Yuki here > click on the pencil
In Yuki every VAT tariff has a code. Enter the correct code and the percentage here

Linking a Yuki VAT tariff

Attention: Do you use a reverse charge VAT tariff? Then you have to set the percentage of the VAT tariff in Robaws to 0% and set the percentage correctly in Yuki. Thanks to the link with the correct VAT code, Yuki calculates it correctly.

Importing GL accounts

Do you work with several companies? Then the imported GL accounts are linked to the correct company: a GL account that is imported for a specific company is only available for that company, and GL accounts that are not linked to a specific company remain available for all companies. You will find more explanation in Using GL accounts.

You can import the GL accounts from Yuki into Robaws, so that you can already assign them to particular items, suppliers, customers and so on.

Go to settings > general > GL accounts
Tick the box and click through.
If Yuki is linked, you will see an action button at the top to import the GL accounts. Click on it and the GL accounts are imported from Yuki.
Activate the settings.
You can now use these GL accounts in Robaws.

Settings

Setting	Explanation
Default ledger sales	Here you can set the default GL account for sales invoices. You can keep a different GL account on an item or a customer. You can also change the GL account manually on an invoice line. It is NOT possible to leave this empty; Yuki always expects a GL account.
Default ledger purchase	Here you can set the default GL account for incoming invoices. You can keep a different GL account on an item or a supplier. You can also change the GL account manually on an invoice line. It is NOT possible to leave this empty; Yuki always expects a GL account.
Sync payment status of incoming invoices/sales invoices	If you switch these options on, Robaws requests information from Yuki about the outstanding amounts overnight. These are then updated in Robaws. That way you can follow up payments from Robaws in a simple way.
Automatic booking (IBAN required)	If you switch this option off, you are no longer obliged to fill in the IBAN and BIC on the supplier of incoming invoices. However, the invoice date may shift when you book manually in Yuki. (This is Yuki's own behaviour.)

Error messages

Error message	Explanation	Solution
[Yuki] Unknown problem: [Yuki] Active purchase taxcode with percentage "21.0" and type "1" for date "01/03/2026 00:00:00" cannot be found.	The VAT codes are not linked to each other correctly.	Check in Robaws which VAT tariff is linked, then check in Yuki whether these Yuki VAT codes really are for sales or purchase, and whether they match the VAT tariff in Robaws.
[Yuki] Unknown problem: [Yuki] De transactieregels kunnen niet worden geboekt omdat de grootboekrekening (600000 Aankopen van grondstoffen) is uitgeschakeld.	The GL account has been disabled in Yuki for receiving bookings.	Enable this GL account for API bookings in Yuki
The domain is not licensed for this functionality	This error message means that you do not have access to the sales functionality.	You can choose a bundle that includes sales in the licence, or you can have the accountancy feature set up through your accountant. Contact Yuki to resolve this.

There are also 2 things that are not possible in the integration with Yuki, because of the limitations in Yuki and in Yuki's API:

Incoming invoice with different VAT tariffs: Yuki cannot process incoming invoices with different VAT tariffs. You will have to split this invoice in Yuki.
Financial discount: we cannot pass on a specific financial discount via the API. We pass it on as an extra line on the invoice that is created in Yuki.

Updated on: 09/09/2026

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