Introduction: what is an e-fff

An e-fff document is an electronic file of the XML type that contains structured data and an image of the document.

An e-fff document is the electronic version of an invoice or a credit note.

The e-fff document is created by your supplier and contains the mandatory information and data of an invoice as defined by the Administrations.

With structured data we mean that the data in the document is enclosed between tags. The tags give an indication of what type of data is present. The advantage of structured data is that another application will be able to identify exactly what it needs: who the provider is, what is the date of the document and what is its total amount without interpretation..

The basic structure of an e-fff invoice is based on a UBL document which has in turn been defined by an OASIS consortium with the aim of defining international standards.

UBL, Universal Business Language, defines a standard XML-free commercial document rights library that supports the digitization of business and logistics processes for national and international supply chains, such as purchasing, purchasing, transportation, logistics , intermodal freight management and other supply chains. management functions.

UBL can be considered a lingua franca – a language (data format) that allows disparate business applications and commercial communities to exchange information along their supply chains using a common format.

As described in the previous section, the UBL 2.0 standard is able to cover more than creating an electronic invoice. The signatories of the e-fff protocol have agreed to narrow the scope of the e-fff protocol and not to support all of the available fields that are available in the UBL 2.0 standard.

Several Versions

When defining the e-fff format (2011) UBL 2.0 was used a starting point. As the e-fff was one of the first implementations (together with initiatives in the North of Europe), this standard could be maintained a very long time

The use of e-invoicing has evolved considerably over the past two years thanks to various initiatives such as e-fff, peppol or the definition of a European standard for electronic documents. Since 09 July 2018 UBL 2.2 format is available.

The e-fff format will be updated in the coming months to take into account the small changes and improvements of the latest UBL versions.

Click on one of the buttons to access the definitions of the version.