Poland JPK validator — independent lite / authorised local BYO — 2026-11-06.1
XSDHub independently authored rules, explanations, fictional examples and test subsets. No official XSD, imported code list, Schematron, official rule pack or new engine/plugin bundled.
Official source: https://www.gov.pl/web/kas/struktury-jpk
MF reuse conditions: https://www.gov.pl/web/finanse/ponowne-wykorzystywanie
MF requires source, production/acquisition dates, modifications and known author unless different specific conditions apply. Public/free access is not a licence. Gov.pl footer CC BY-SA is not applied to each XSD/import.
Inspected v7m3: https://crd.gov.pl/wzor/2025/12/19/14090/schemat.xsd ; MF / KAS ; production date in namespace http://crd.gov.pl/wzor/2025/12/19/14090/ ; acquired 2026-11-06 ; SHA256 1870324001ba1318f0535841b963571e970b45ef32ba5ca3d433f0dc5da412df ; no modifications to research evidence ; known personal author not identified. NOT bundled.
Inspected v7k3: https://crd.gov.pl/wzor/2025/12/19/14089/schemat.xsd ; MF / KAS ; production date in namespace http://crd.gov.pl/wzor/2025/12/19/14089/ ; acquired 2026-11-06 ; SHA256 3e7b70f30debf7ffe35127ac694b465004a45c0786b3267a92d91c7c29595d34 ; no modifications to research evidence ; known personal author not identified. NOT bundled.
Inspected fa4: https://www.gov.pl/attachment/aaa27be2-3663-46cd-bf53-f8925f0170b3 ; MF / KAS ; production date in namespace http://jpk.mf.gov.pl/wzor/2022/02/17/02171/ ; acquired 2026-11-06 ; SHA256 7ad0a6fb0476345b5af604c9a7ce4c967f97852592e7bd01e668ba2ab668dc51 ; no modifications to research evidence ; known personal author not identified. NOT bundled.
Inspected v7m2: https://crd.gov.pl/wzor/2021/12/27/11148/schemat.xsd ; MF / KAS ; production date in namespace http://crd.gov.pl/wzor/2021/12/27/11148/ ; acquired 2026-11-06 ; SHA256 90cb53e1217449f3ebc671962922fd62f7a892cca26be46a6f5de3d0dc01b96b ; no modifications to research evidence ; known personal author not identified. NOT bundled.
Inspected v7k2: https://crd.gov.pl/wzor/2021/12/27/11149/schemat.xsd ; MF / KAS ; production date in namespace http://crd.gov.pl/wzor/2021/12/27/11149/ ; acquired 2026-11-06 ; SHA256 321d7f8e3c90065a40759d978087e952a73f9cdafec17281c27ba0ecda53e358 ; no modifications to research evidence ; known personal author not identified. NOT bundled.
External imports/type and code-list rights unresolved per artifact; no complete official pack published. Local BYO requires sufficient processing/modification rights and per-file provenance before parsing, with SHA256 calculated locally. Absolute imports map only to supplied namespace files; no network downloads.
Existing libxml2-wasm 0.7.2 MIT: /vendor/libxml2/LICENSE ; underlying libxml2 MIT: /vendor/libxml2/LICENSE.libxml2 . Existing notices retained.
Own test-only XSDs: independently authored by XSDHub 2026; MIT permission to use, copy, modify and distribute with this notice. They are NOT MF / KAS schemas and prove only their test subset. No official XSD validity established for rule-only demos; never submit them.
Separate V7M/V7K(3), historical (2) and FA(4) packages. JPK_FA is not KSeF FA(3). No fiscal qualification, taxpayer status or successful submission/UPO proof.

MIT License (independently authored test XSD fixtures only)
Copyright (c) 2026 XSDHub
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.