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Sync data with e-conomic
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Visma e-conomic is a cloud accounting platform widely used by SMEs and accounting firms across Denmark, Norway, and the broader Nordic region. The platform supports core bookkeeping processes such as invoicing, VAT handling, bank reconciliation, and financial reporting, with strong alignment to Danish accounting standards and local compliance requirements.
Integrate e-conomic alongside dozens of other accounting and ERP systems through Maesn Unified API.
Authentication - Without the Complexity
E-conomic's proprietary two-token model (X-AppSecretToken + X-AgreementGrantToken) requires a custom onboarding flow, per-tenant token storage, and manual revocation handling.
Maesn wraps this entirely: you register your app once, and your users connect via a standard Auth flow. No e-conomic specific logic, no token management, no edge cases.
One API with Maesn — REST and OpenAPI Both Covered
E-conomic splits functionality across its REST API and OpenAPI, with different pagination behavior and endpoint coverage on each. Maesn routes requests to the correct surface under the hood and normalizes pagination, so you always get complete, consistent data without knowing which API you're talking to.
Mandatory Reference Resolution — No Guessing, No 400 Errors
Creating objects in e-conomic requires pre-fetched tenant-specific references for layout, payment terms, VAT zone, and currency. Maesn resolves and maps these during onboarding — your code never touches raw reference lookups.
"Adding Qonto to our existing integrations was a piece of cake with Maesn. It is a game changer for our customers with all the integration cababilites!"
Juri Preis
CEO @ Smarta
Learn more about e-conomic API Integration
The Maesn difference
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Why companies choose Maesn
3 Reasons why it is better to integrate e-conomic API with Maesn
Secure & Compliant
We have a strong relationship to Visma. This ensures that the Maesn API is always up-to-date and any maintenance is covered on our end.
Common Data Model
We provide a clean, unified data model that abstracts away system-specific quirks, so teams can build reliable integrations without dealing with ERP-specific complexity or workaround-heavy implementations.
E-Conomic Sandbox
We provide you with everything you need, so you can focus on what counts.
Yes. e-conomic uses a proprietary two-token authentication model, requires tenant-specific reference resolution before creating any objects, splits functionality across two active APIs with different pagination behavior, and enforces strict invoice lifecycle rules. Each of these adds engineering effort that most teams underestimate before starting.
In comparison to other Unified API vendors, you can always sync data when you want with Maesn. This can be done in real-time using webhooks or in your favorite interval like hourly, daily, weekly etc.
If a request fails, Maesn automatically responds with a corresponding error code. Further information can be found here.
You can monitor the status of your requests and resolve any errors using the Maesn Dashboard, which provides real-time observability and logs for better issue detection.
Setting up a e-conomic integration from scratch through Maesn typically takes anywhere from a few days to a few weeks, based on the complexity of your use-cases. The greatest thing is, once the integration is implemented, you can access more than a dozen additional accounting integrations, including DATEV, Exact Online, Qonto and Sage.
Maesn uses HTTPS for all data transfer. All connections are secured using TLS with industry-standard, state-of-the-art encryption.
We don't store any of your customer data at Maesn to be 100% GDPR compliant - our platform is hosted at Microsoft Azure in Frankfurt, Germany.A direct integration requires building custom auth flows, per-tenant token storage, reference resolution logic, lifecycle-aware sync, and dual-API routing — all before shipping your first feature. Maesn handles all of this out of the box and gives you a single unified API that works the same way across e-conomic and every other accounting system in the Maesn portfolio.
The most frequent blockers are: handling the X-AppSecretToken and X-AgreementGrantToken auth flow per tenant, resolving mandatory references (layout, payment terms, VAT zone) before creating invoices or customers, dealing with immutable booked invoices and the absence of PATCH support, and routing correctly between the REST API and the newer OpenAPI surface.
Maesn supports both. Requests are routed to the correct API surface under the hood based on the operation and the tenant's agreement configuration. Pagination differences and endpoint coverage gaps between the two APIs are handled automatically.
Yes. Maesn is built for multi-tenant SaaS products. Each of your customers connects their own e-conomic account through a standard OAuth-like flow managed by Maesn — no custom per-tenant token management or onboarding logic required on your side.
This depends on your use case. Maesn clearly documents which e-conomic modules are required for specific endpoints, so you can communicate this to your customers upfront and avoid unexpected API errors in production.
Frequently Asked Questions About E-conomic API Integration
