Connect Fortnox and Aca

Connecting Fortnox and Aca for a company using both systems would involve enabling the transfer of relevant data between them. This could allow for more efficient handling of financial, accounting, or operational information, reducing manual entry and supporting more consistent data across both platforms. Such a connection would require careful planning for security and data integrity.

You can build this integration on the System2System platform. We design the connection between Fortnox and Aca around the way you work — not as an off-the-shelf connector, but to fit your systems.

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Why connect Fortnox and Aca?

A company operating both Fortnox and Aca could benefit from connecting these systems to enable the exchange of business data between them. Without such a connection, staff may need to enter the same information separately into each system, increasing the risk of errors and consuming extra time. This manual process can also result in records that gradually diverge, meaning that information in one system may not match the other. As a result, decisions could be made based on outdated or inconsistent data, which can impact business operations and reporting accuracy. If a connection were established, it could allow for the transfer of key business data such as customer information, invoices, payment records, and inventory levels, depending on what each system is designed to manage and expose. The ability to exchange this kind of data could reduce duplication of work and help ensure that both systems reflect up-to-date and consistent information. What can actually be exchanged depends on what each system exposes through its API, and is determined per situation.

How System2System builds an integration

Connectors

We connect to each system through the interface it offers — an API, a database, a file exchange or a webhook — and handle authentication, rate limits and retries.

Mapping

Fields rarely line up one to one. We map and transform the data so both systems receive it in the shape they expect.

Workflow

We define what triggers an exchange, in which direction data flows and which system takes precedence when the two disagree.

Monitoring

Every exchange is logged. Failures are flagged and can be replayed, so nothing disappears without anyone noticing.

What can actually be exchanged?

That depends on what Fortnox and Aca make available through their APIs, on the licences and modules in use, and on the version each system runs. Which records are synchronised, in which direction and how often, is something we determine together before any work starts.

We are happy to look at your specific situation and tell you what is feasible — including when the answer is that it is not.