Other software manufacturers have already developed a procedure for compliance with the three main points of the law, I detailed below

Invoicing register

The invoicing software you use must be approved and generate an invoicing record (for each new or cancelled invoice issued).

The integrity, conservation, accessibility, legibility, traceability and unalterability of the billing records must be guaranteed.

Automatic submission of records

The taxpayer has two options:

Automatic sending of each invoice record to the Tax Administration (called Verifiable Invoice Issuing System or VeriFactu system).

This is the most convenient option and the one recommended by the Administration.

Registration without sending invoices: At any time, the AEAT may request and obtain a copy of the information stored.

Event log

The invoicing software must also keep an event log, separate from the invoicing log, which may not be altered and must be retained until the tax obligations expire.

The aim is to record the basic events of the system (version, updates, user input and output, etc.) in order to provide traceability of what is done in the software.

There is talk (in the Law) of a possible regulatory development specifying whether certification is necessary and what specific requirements this certification must work on... Is this still the case? Or do you have any other information that there is a regulatory development?