The format #
Prexfo consists of two technical building blocks that together make up the standard. Both are deliberately kept simple — “as high as necessary, as precise as possible” is the guiding motto.
PropertyExchangeFolder #
The folder structure is the data model. No artificial IDs, no database magic — the path of a file already says what it refers to.
PropertyExchangeFormat #
The XML schema for the structured core data: cleanly versioned, reusable types, open extension points.
Human and machine at once #
Structured data and its readable representation belong together. Prexfo combines
both in a PDF/A-3 container, modeled on the electronic invoice ZUGFeRD: the
PDF shows the content to the human, the embedded prexfo.xml delivers the same
data structured to the machine.
Version 1.0.0 · namespace https://prexfo.org/schema/v1 · encoding UTF-8 ·
validation via XSD 1.0. Schema and SDK are released under Apache 2.0.