Phase 2 explained the way a shop owner needs it: what to do, by when, and what happens when the internet is out.
5 min read
What Phase 2 actually requires of your till, in plain language: the XML, the cryptographic stamp, the hash chain, clearance versus reporting, and the eight things to check before your wave arrives.
4 min read
Getting this wrong is the most common Phase 2 mistake. The two invoice types follow different flows, carry different fields and have different deadlines — and your POS must choose correctly at the counter.
4 min read
The square on your receipt is a signed data structure, not a link. Here is exactly what it encodes, why Phase 2 added three fields to it, and how to verify your own printer is producing a valid one.
4 min read
Every till that signs an invoice needs its own certificate from the authority. Here is the exact sequence, what each step produces, what goes wrong, and what to do when you add a terminal at 7pm.
5 min read
A power cut or a fibre fault does not suspend your obligations. Here is what the rules allow during an outage, what your system must be able to do locally, and the fallback procedure to train your staff on.
4 min read
Waves are defined by annual revenue and announced progressively, with at least six months notice sent directly to the taxpayer. Here is how the mechanism works and how to check your own position.
4 min read
Most e-invoicing violations are not deliberate. They are a QR that stopped scanning, a device whose certificate expired, or a week of rejected invoices nobody looked at. Here is how each one happens and how to catch it early.
4 min read
A customer returns an item. You cannot delete the invoice — the hash chain forbids it. What you issue instead is a credit note, and it has its own required fields and its own reporting path.
4 min read
A rejection is a validation failure with a code, not a mystery. Here are the eight causes behind most of them, what each looks like, and how to fix it without re-issuing a month of invoices.
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