Pinned technical validation
Run deterministic checks against versioned invoice fixtures, EN 16931 resources, and France-specific rule packs so every result carries an exact technical identity.
France-first integration testing
Test e-invoicing integrations with evidence, not assumptions.
InvoiceRig validates pinned technical rule packs and records provider sandbox behavior as separate evidence. It does not certify legal compliance, act as a French PA, or replace professional legal advice.
Observed provider behavior
Keep provider sandbox submission and lifecycle observations distinct from specification validation. Provider acceptance is evidence about an integration path, not a legal-conformance verdict.
Reproducible evidence
Retain bounded outcomes, rule identifiers, artefact hashes, and pinned run identities so engineering teams can compare like with like without exposing invoice bodies or credentials.