- - EN16931


Welcome to! offers a centralized access to various e-invoicing formats, the development of standard industry profiles based on the EU core invoice and the verification of messages against those formats.

From standard to implementation

The development of electronic invoices has taken large steps forward for a number of years, though the electronic invoice itself is nothing new. Electronic invoices have already been exchanged in many sectors for several decades. Over the years, many formats have been developed. And also some standards. In practice, however, these standards are rarely fully implemented. Instead, user groups or individual companies keep on creating individual guidelines or specifications. It has become customary that the use is then made compulsory within the scope of the business relationship, e.g. by a contractual agreement.

For the invoice sender this means that he often has to use many different interfaces and thus an implementation is cost intensive. The invoice recipient, on the other hand, generally has the goal that the processing of electronic invoices will be as automated as possible.

The onboarding process

The first time a sender is connected to the system of the invoice recipient is also called on-boarding. However, from the viewpoint of an invoice recipient, the on-boarding process should not take place as the last step. Instead, it is preferable to start with the potential analysis which business partners should be involved in the automation process.

Essential aspects of the on-boarding process are

The agreed data format has been complied with and the business rules are fulfilled.

Technical validation and testing of electronic invoices

The process of technical validation can be automated in essential points., with its validation functionality, offers the opportunity to check invoice documents against the different usage recommendations. The following aspects are taken into account:

If the specification provides appropriate business rules, these business rules can also be checked. These include, for example:

Result of the Validation:

Technical documentation of usage recommendations

If an invoice specification is to be implemented, technical documentation is indispensable. Invoice.Fans provides a uniform representation of the various standards and usage recommendations (Core Invoice Usage Specification CIUS) at a central location.

Thus the structure is easy to understand and the quality of the implementation is increased.

Development of Core Invoice Usage Specification CIUS

The European standard defines how core-compliant usage recommendations can be developed. This means that industry-specific requirements can be represented in a profile. An example for a CIUS in Germany is XRechnung and after its publication on ZUGFeRD 2.0.

In addition to this portal, a free CIUS tool is available if you want to develop a CIUS in your organization, your sector or for your industry. This CIUS is then also made available on this portal. This means that your users can validate their messages against this profile. For example, the procedure could be as follows:

How do I get access?

To register, click on Create New Account: After entering your contact information, you will receive an email with access information within two office days.

After registration click on Log On .