generated: '2026-07-18'
method: searched
source: https://dddinvoices.com/documentation-e-invoicing
standards:
- id: peppol
  conforms: true
  evidence: >-
    Platform exchanges invoices over the PEPPOL network for cross-border B2B/B2G
    e-invoicing (https://dddinvoices.com/learn/peppol-network).
- id: en16931
  conforms: true
  evidence: >-
    European e-invoicing (EN 16931 semantic model) compliance is the core of the
    EUeInvoices service; issues locally compliant structured e-invoices across
    30+ countries.
- id: real-time-reporting-fiscalization
  conforms: true
  evidence: >-
    Provides fiscalization and real-time / digital tax reporting to national tax
    authority platforms across multiple European jurisdictions.
- id: gdpr
  conforms: true
  evidence: >-
    Publishes a GDPR data processing agreement
    (https://dddinvoices.com/data-processing).
- id: rfc9457-problem-details
  conforms: false
  evidence: Errors use a custom Status/ResultType/Reason JSON envelope, not application/problem+json.
- id: oauth2
  conforms: false
  evidence: Authentication is a custom token (IoT connection key) header scheme, not OAuth 2.0.