Connect Fortnox and x12

Connecting Fortnox and x12 for a company could enable the transfer of financial or transactional data between the two systems. This could support more efficient workflows, reduce manual data entry, and help maintain consistency across business records. Integration could also facilitate reporting and reconciliation tasks by ensuring relevant data is available in both environments.

You can build this integration on the System2System platform. We design the connection between Fortnox and x12 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 x12?

: A company operating both Fortnox and x12 could benefit from connecting these systems to enable more reliable and efficient data exchange. Without such a connection, staff may need to enter the same information into both systems, which increases the risk of errors and consumes valuable time. This manual duplication can also result in records becoming inconsistent over time, meaning that decisions could be based on outdated or mismatched data. When systems do not communicate, discrepancies in figures such as financials, inventory, or customer details may go unnoticed until they cause operational problems. If a connection were established, it could support the transfer of data such as invoices, purchase orders, customer and supplier information, and accounting records, depending on what each system is designed to handle and expose. The actual data that can be exchanged between Fortnox and x12 depends on the capabilities and interfaces each system provides through its API, and must be determined for each specific 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 x12 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.