Fix France B2G UBL: contract DocumentType and code routage scheme 0224

[pmenendz]

Ref: GBL-71 · Pylon #4850

Fixes two France B2G UBL serialization bugs reported by Brevo in Pylon ticket #4850 ("UAT Bug reporting 014 — B2G specificities").

Issue 1 — Contract type dropped (ordering.go)

addOrdering emitted only the contract code (cbc:ID, BT-12) and never the contract type, so cac:ContractDocumentReference/cbc:DocumentType (the France CTC/Chorus Pro extension EXT-FR-FE-01, "type de contrat") was missing from the output.

Fix: serialize contract.Type into cbc:DocumentType.

Note: type is a GOBL cbc.Key, so it must be lower-case — uppercase values like "MARCHE" are (correctly) rejected upstream with key must match the required pattern. EXT-FR-FE-01 has no fixed code list in XP Z12-012 (free text complementing BT-12), so the value is passed through verbatim.

Issue 3 — Code routage (scheme 0224) missing (party.go)

newParty derived PartyIdentification/schemeID solely from the iso-scheme-id extension. That extension is set during normalization only by the fr/ctc addon (B2B/CIUS). The France Extended / B2G profile uses the fr/facturx addon, which is a placeholder and never sets it — so the private-id (code routage / Chorus Pro "Code Service") identity serialized without schemeID="0224", violating BR-FR-CPRO-11.

Fix: add an identitySchemeID() resolver that prefers the explicit iso-scheme-id ext and falls back to mapping the private-id key → 0224. Now the 0224 identity is emitted in both the CIUS and Extended profiles, alongside 0009 (SIRET).

Caveat: the customer's invoice must actually carry the code routage as a private-id identity. Their current output has no 0224 at all, which suggests the Chargebee→Invopop workflow isn't mapping that field yet — worth confirming alongside this fix.

Not included

Issue 2 (#ADN footnote showing escompte text instead of B2G) is not a code bug — those notes are hardcoded in Brevo's Chargebee workflow (confirmed by Álvaro in Pylon #4781). gobl.ubl serializes notes faithfully (#ADN#B2G works). It needs a workflow-config change, not a code change here.

Tests

• TestNewOrdering/contract type maps to cbc:DocumentType
• TestNewParty/private-id key maps to scheme 0224 without ext

Both fixes are additive (DocumentType only emitted when type is set; the 0224 fallback only fires when the ext is absent), so no existing fixtures changed. go test ./..., gofmt, and go vet all pass.

🤖 Generated with Claude Code

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.65%. Comparing base (8b92e0a) to head (658abdc).

Files with missing lines	Patch %	Lines
party.go	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #77      +/-   ##
==========================================
+ Coverage   78.61%   78.65%   +0.03%     
==========================================
  Files          26       26              
  Lines        1927     1935       +8     
==========================================
+ Hits         1515     1522       +7     
- Misses        296      297       +1     
  Partials      116      116              

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