SEF Preflight
Predicts SEF rejection for Serbian e-invoices and returns deterministic, audit-grade reports.
Overview
SEF Preflight is a deterministic validator for Serbian e-invoices (UBL 2.1 + SRBDT/CIUS). It identifies the exact failure, produces explicit findings with evidence, and suggests concrete corrections.
Architecture
The system is built around a shared validation core with versioned rulesets, pinned regulatory sources, and explicit runtime context. Thin interfaces delegate to the same runtime to keep report output stable across identical inputs, rulesets, and environments.
Status
ACTIVE_DEVELOPMENT