The problem
Connectivity does not equal release confidence.
ERP mappings, schemas, API behavior, and error formats evolve. Teams often reconstruct release evidence from spreadsheets, screenshots, raw XML, and API logs after something changes.
Product brief
A commercial product idea, made tangible.
YichenGuard helps teams that already implement KSeF connectivity understand whether a release changed supported invoice behavior, what evidence proves it, and what a human should review next.
The value
One reproducible path from change to decision.
Versioned scenarios, frozen inputs, deterministic outcomes, semantic differences, bounded diagnosis, and a human assessment create an evidence trail that is easier to trust and review.
Product architecture
The controls are part of the experience.
The portfolio value comes from visible product judgment, not decorative complexity.
Deterministic truth first
Validation, assertions, semantic differences, severity, and completeness remain code-owned.
Evidence before explanation
Every release signal points back to reviewable facts, provenance, and stable evidence identities.
Human release authority
AI may advise later; only an authorized person can record PASS, WARN, or BLOCK.
Interactive case study
Choose where to enter the product.
Each route is a product-native task, not a presentation slide.
- 01PlanFreeze a candidate run
Define release context, baseline, coverage, and deterministic policies.
→ - 02CompareTrace outcome transitions
Align every scenario against a human-approved PASS baseline.
→ - 03InspectReview the evidence
Move from result to difference, provenance, and bounded advisory context.
→ - 04DecideRecord the human gate
Complete the review controls and preserve a clear assessment record.
→
Honest scope
What this public portal is—and is not.
Demonstrates
- Product reasoning and information architecture
- Deterministic/probabilistic separation
- Evidence-first review and human checkpoints
- Responsive enterprise workflow UX
Does not claim
- Official KSeF compatibility or certification
- Production invoice processing
- Persisted collaboration or live integrations
- Autonomous release or compliance authority