camt.053/054 validator — independent local lite / authorised BYO, 2026-11-06.1

No official ISO XSD, national/bank schema, external code-list pack, Schematron, plugin or bank handbook is distributed by this feature. Four document/version demos are independently written rule-only examples, not bank-approved files. Official XSD validity remains unexecuted without your authorised complete package. Test-subset results do not establish official ISO validity.

ISO source: https://www.iso20022.org/ . This is not the official ISO 20022 website. The sole source of up-to-date ISO 20022 message standards and Repository information is https://www.iso20022.org/ . Repository IPR and reproduction terms: https://www.iso20022.org/intellectual-property-rights and https://www.iso20022.org/terms-use . Respective contributors retain rights; national/bank profiles require separate permission. Official downloads returned maintenance HTML during this build; unverified responses were not bundled.

Existing local engine: libxml2-wasm 0.7.2, MIT. Original copyright/permission notices: /vendor/libxml2/LICENSE and /vendor/libxml2/LICENSE.libxml2 (unchanged). First-party conditional rules and original fictional examples: XSDHub. No new engine, plugin, remote runtime fetch, service or tracker. XML/amounts/IDs stay in the local tab and user-initiated downloads; local view/report can contain sensitive fields and is never an analytics payload.