When transitioning to mandatory B2B e-invoices, companies often first focus on their internal processes: accounting software, ERP system, document export and import, technical integration, and alignment of internal procedures. This is an important first step, but for larger companies it is not sufficient on its own.
An e-invoice is not a document that exists only within a single company. Its value lies in being exchanged correctly, securely, and automatically between two business entities. Therefore, successful implementation of e-invoicing also depends on how customers, suppliers, and other business partners are included in the process.
Why is this important for smaller companies as well?
In practice, many smaller companies will be included in e-exchange through their larger business partners. When implementing e-invoicing, a larger company will need to arrange document exchange with its network of suppliers, customers, and other partners—among whom smaller companies are often included.
This does not mean that smaller companies participate only because larger companies require it. However, it does mean that changes introduced by larger customers will also affect how their partners do business.
If a larger company wants to digitalise invoice exchange efficiently, it must check in good time which partners are already ready, which systems they use, which standards are supported, and where additional communication or support will be required.
Implementing e-invoicing is part of a broader business ecosystem
For larger companies, the success of implementation does not depend only on internal systems. It also depends on how the company will exchange e-invoices with business partners who use different software, different formats, different standards, or different exchange methods.
In domestic operations, this can already be challenging enough. In international operations, the complexity increases further, as local requirements, technical specifications, and partners’ expectations may also differ.
Therefore, implementing e-invoicing is not only an accounting or IT project. It is a project that requires coordination across the entire business network.
What happens if partners are not involved in time?
If a company does not assess its partners’ readiness in time, issues often become apparent only in practice—when e-invoices are already being sent or received.
At that point, misaligned data, incorrect formats, missing information, document rejections, additional checks, or manual exception handling may occur. Instead of automated exchange, the process slows down, and the volume of communication, administration, and operational coordination increases.
This is precisely one of the reasons why it makes sense to start involving partners early enough—not only once the system is already in place, but already during the preparation phase.
What should be checked before implementation?
During the preparation phase, it is recommended to review business partners and determine:
- which partners will be included in e-exchange,
- which partners are already ready,
- which use solutions that enable e-invoice exchange,
- which need additional information or support,
- which standards and formats they use,
- how exchange testing will be carried out,
- how exceptions, rejections, and errors will be handled.
Such a review enables a more controlled transition, fewer operational complications, and clearer communication with partners.
The entire process must be ready, not just the system
With mandatory B2B e-invoicing, it is not enough for a company to technically enable the sending or receiving of e-invoices. It is important that the entire exchange process is ready—together with the partners the company does business with on a daily basis.
This means fewer errors, fewer rejections, less manual work, and more reliable document exchange.
Involving business partners is therefore not an additional step, but one of the key elements of successful e-invoicing implementation.