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Changelog

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All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

[0.10.1] - 2026-09-07

Changed

  • regulatory-update: Peppol BIS Billing 3.0 spec pin 3.0.20 → 3.0.21, closes regulatory-update issue #5. Released 2026-05-20, mandatory from 2026-08-17. Key changes: new optional Profile 02 “Billing with Response” (separate SMP registration); UBL/CII 1.3.16; rules PEPPOL-COMMON-R052/R053 move from warning to error for every profile; new warning-only rules for Dutch identifiers. All of these live in the Peppol-specific overlay (PEPPOL-EN16931-UBL.sch), which stays unbundled per the existing BE-SC-11 licensing gap — validate_invoice_be only runs the CEN base Schematron, so none of this is a behavior regression. Documentation-only pin refresh (context-library/countries/be.md at the workspace root); no code change.

[0.10.0] - 2026-08-24

Changed

  • peppol_send now emits a real wsse:Security message signature. mcp-einvoicing-core v1.20.0 fixed the AS4 transport client’s _apply_message_signature, which previously computed a signature and discarded it, sending unsigned outbound messages. This is an API-compatible, wire-level behavior change — no code in this package changed to pick it up, but every outbound message sent through this package’s peppol_send is now actually signed. Not yet validated against a live sandbox Peppol AP; treat as unverified at the transport level until that validation runs.
  • Lower-bound pin on mcp-einvoicing-core raised to >=1.20.0 (was >=1.19.0).
  • xslt2 extra now chains mcp-einvoicing-core[xslt2]>=1.20.0 (was >=1.19.0).

Added

  • Mounted three new opt-in core plugins in server.py, alongside the existing Peppol tool plugin:
    • register_peppol_reporting_tools (mcp_einvoicing_core.peppol.reporting_tools) — validate_eusr_report, validate_tsr_report (End User / Transaction Statistics Reports). Requires the [xslt2] extra.
    • register_peppol_mls_tools (mcp_einvoicing_core.peppol.mls_tools) — validate_mls_message, build_mls_message (Message Level Status). Requires the [xslt2] extra.
    • register_en16931_codelist_tools (mcp_einvoicing_core.en16931_codelist_tools) — 13 list_*/check_* pairs plus get_en16931_codelist_version for the EN 16931 semantic code lists. Requires EINVOICING_EN16931_CODELIST_DIR to be set to a local copy of the CEF Digital code lists (not bundled).
    • peppol_directory_search (public Peppol Directory search) arrives automatically via the existing register_peppol_tools mount — no server.py change needed for this one.
  • All new tools are mounted unconditionally; they raise a clear error at call time (not at registration) when their extra or data directory is missing, matching the existing eDEC codelist tool pattern.

[0.9.0] - 2026-08-21

Changed

  • check_peppol_participant_be removed. Peppol participant lookup (and the rest of the Peppol network surface: service-endpoint lookup, DNS-only diagnostic, AS4 send, and the eDEC codelist tools) now comes from the shared core Peppol tool plugin (mcp_einvoicing_core.peppol.tools.register_peppol_tools), mounted in server.py with a BE-specific identifier adapter (_be_id_adapter) that normalizes a bare Belgian VAT number to the 0208:<digits> Peppol scheme (KBO/BCE). Use peppol_lookup_participant instead of the removed tool; behavior and response shape are unchanged for that use case, but the tool now also exposes peppol_get_service_endpoint, resolve_peppol_dns, peppol_send, and 8 eDEC codelist tools that were not previously available in this package. See context-library/roadmap-2026.md [ARCH-CONVERGE-BE].
  • Lower-bound pin on mcp-einvoicing-core raised to >=1.19.0 (was >=1.18.0), required for register_peppol_tools.

[0.8.0] — 2026-08-20

Changed

  • validate_invoice_be(profile="peppol-bis-3"|"pint-eu") now returns real validation results (metadata.engine="schematron-xslt", metadata.scope="en16931-base-only") instead of the "unavailable" result introduced in v0.7.0, using the CEN EN16931 base Schematron newly bundled in mcp-einvoicing-core>=1.18.0 ([CORE-EN16931-BASE-SCHEMATRON-1]). This checks the ~50 CEN BR-* structural/arithmetic rules — a real improvement over the presence-only XPath fallback this package carried before v0.7.0 — but explicitly does not check the Peppol-specific overlay rules (profile/process ID registration, EndpointID scheme, narrowed code lists). Every result now carries an explicit warning that this is not a full Peppol BIS3 conformance check. See context-library/decisions/peppol-schematron-artifact.md for why the overlay itself still cannot ship (no confirmed OpenPeppol redistribution rights).
  • Lower-bound pin on mcp-einvoicing-core raised to >=1.18.0 (was >=1.15.0) for the new schematron_artifacts module.

Unchanged

  • The local full-Peppol-overlay Schematron path (specs/peppol_bis_3/, _find_schematron_xslt) stays wired exactly as before — if a properly-licensed compiled overlay stylesheet is ever added there, it still takes priority over the new base-only path. No such file exists today.

[0.7.0] — 2026-08-17

Removed

  • PEPPOL_BIS3_RULES (the package’s hand-rolled Peppol BIS 3.0 base-rule approximation) removed entirely, rather than kept as the “fixed” version shipped in v0.6.0. It covered only ~10 of the ~50+ real CEN/Peppol rules (no arithmetic/totals checks) and had just been found to carry a rule-ID mislabeling bug — a package-local partial duplication of rules that are identical across every Peppol-BIS3-consuming country is a recurring source of exactly this class of bug. See context-library/roadmap-2026.md [CORE-PEPPOL-SCHEMATRON-1].

Changed

  • validate_invoice_be(profile="peppol-bis-3"|"pint-eu") now returns an explicit unavailable result (valid=False, an error explaining why, metadata.engine="unavailable") when no real compiled Schematron is loaded, instead of a silently-partial pass/fail. A false “valid” from an incomplete rule set is worse than a clear “cannot validate” signal for a compliance tool.
  • standards/mercurius.py’s MERCURIUS_RULES no longer splices in PEPPOL_BIS3_RULES — it now contains only the Mercurius-specific overlay (MER-002/MER-003/MER-004), which is genuinely BE-local and was not part of the cross-country duplication problem. Every mercurius-profile result now carries an explicit MERCURIUS-SCOPE warning stating that base EN16931/Peppol BIS 3.0 compliance is not checked by this profile, since it no longer runs those checks at all.

Fixed

  • mercurius profile validation was silently affected by the same rule-ID mislabeling bug fixed in v0.6.0, since MERCURIUS_RULES previously spliced in PEPPOL_BIS3_RULES directly. Moot now that the splice is removed.

[0.6.0] — 2026-08-17

Fixed

  • PEPPOL_BIS3_RULES (XPath fallback validator): rule IDs were paired with the wrong rule content — every entry from the old BR-02 onward tested a different field than its real CEN/Peppol rule ID (e.g. the old BR-02 checked ProfileID/BT-23, but the real BR-02 checks the Invoice number/BT-1). Relabeled against the OpenPeppol 3.0.20 Schematron sources; the Profile identifier (BT-23) check is now correctly attributed to PEPPOL-EN16931-R001 rather than a nonexistent CEN BR-* id.
  • BEDocumentValidator._validate_with_profile: the Schematron-XSLT result branch read svrl_result.messages/m.message, fields that do not exist on core’s ValidationResult/ValidationMessage (.errors/.warnings of .text) — dead code, never exercised because no XSLT was ever bundled, but would have raised AttributeError the first time it ran.
  • BEDocumentValidator.__init__ now uses core’s load_schematron_validator() (auto-dispatch to XSLT 1.0 or Saxon/XSLT 2.0+) instead of hardcoding the XSLT-1-only SchematronValidator.

Changed

  • Pinned Peppol BIS Billing 3.0 spec version to 3.0.20 (OpenPeppol 2025 November release, was 3.0.17). Closes regulatory-update issue #4.
  • Added optional xslt2 extra (mcp-einvoicing-core[xslt2]) for future Saxon-HE-backed Schematron validation.

Known gap (unchanged)

  • [GAP id=core.schematron.be_bundled_xslt] remains open: no compiled, SVRL-producing Schematron XSLT is bundled. The 3.0.20 release bundle sourced for this refresh contains only the Schematron sources (.sch) plus a UBL-to-HTML viewer stylesheet (verified not to be a validator) — validate_invoice_be continues to run the XPath fallback above. See context-library/countries/be.md for detail.

[0.4.0] — 2026-06-30

Added

  • parse_ubl_invoice_be tool: UBL 2.1 invoice parsing for the mandatory reception capability (Art. 13quater RD no. 1), including Belgian extensions (OGM/VCS reference, 0208 endpoint scheme)
  • EU PINT v1.0.1 (pint-eu) profile: urn:peppol:pint:billing-1@en16931-2017@eu-3
  • OGM/VCS structured payment reference check-digit validator on BEPaymentTerms.ogm_reference
  • Schematron-based validation via core’s SchematronValidator when the Peppol BIS 3.0 XSLT is present in specs/
  • Structured BCE_API_KEY_MISSING warning and structured Peppol lookup error responses

Removed

  • validate_pint_be tool and the pint-be profile (PINT-BE was never a published OpenPeppol specification)

Fixed

  • buyer_item_id renamed to buyer_article_id (BT-156, was mislabelled as BT-157); now wired to <cac:BuyersItemIdentification> in UBL output

Changed

  • Core dependency floor raised to mcp-einvoicing-core>=1.13.0,<2.0.0

[0.3.0] — 2026-06-27

Added

  • [ARCH-VALID-1c] BEParty.tax_id now enforces the BCE/KBO modulo-97 check digit at model-construction time via a new @field_validator calling mcp_einvoicing_core.TaxIdentifier.validate_be_vat (3-layer party-validation pattern, Layer 1). Invalid VAT/enterprise numbers raise ValidationError instead of being silently accepted.

Changed

  • Test fixtures in tests/conftest.py switched from placeholder VAT numbers to mod-97-valid examples (BE0428759497 and BE0403170701).

[0.1.0] — TBD

Initial release.