France’s electronic invoicing reform : The tax administration  needs structured fiscal data for the transactions , either via E-invoicing for the nationals B2B or E-reporting for the international B2B and the B2C.

This creates two complementary obligations:

- **E-invoicing** for domestic B2B transactions, where the invoice itself is exchanged through the PA/Peppol flow.
- **E-reporting** for transactions outside that domestic B2B scope, mainly B2C and international B2B, where transaction and payment data must be reported to the tax administration through Flux 10 (period-based).

## Scope

Domestic B2B remains handled by the existing e-invoicing flow, because the invoice exchange already carries the required structured information.

Flux 10 is introduced for transactions that must be reported separately:

- B2C transactions, where there is no buyer-side e-invoice exchange.
- International B2B transactions, where the counterparty is outside the French domestic B2B mandate.
- Payment reporting when VAT exigibility depends on collection.

The reporting is period-based and keeps transaction reports separated from payment reports, because they answer different legal obligations and follow different timelines.

## Corrections and Lifecycle

Flux 10 supports both:

- **Initial reports**, for the first declaration of a period.
- **Rectificative reports**, when already reported data must be corrected or completed.

This distinction is needed so corrections remain traceable instead of silently mutating a report that may already have been transmitted.

## Security and Eligibility

This PR also enforces stronger safeguards before using PDP/PA services.

- **2FA is required** because PDP/PA actions expose regulated fiscal flows and should not be available from a simple password-only login. Email-based 2FA is available as a fallback when users have not configured an authenticator app.
- **KYC is introduced** because a company must be identified and validated before Odoo can transmit documents or reports on its behalf through the PDP/PA infrastructure.

Together, these changes make the French PDP/PA flow usable not only for invoice exchange, but also for the wider e-reporting obligations required by the French reform.


Task-4603708

Forward-Port-Of: odoo/odoo#239576