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Development blog · Monthly summary

August 2026: from launch to completion certificates — 24 features in one month

P1network — the business management system built for security-system, low-voltage and electrical installation contractors — launched on 10 August 2026. Within three weeks the partner master, stock, Controlling and Equipment modules were built around the Hungarian tax authority's NAV Online Invoice system. This post sums up what was delivered in August, and why it was done that way.

The launch: NAV lookup, partner master, stock 1.0.0 · 10 Aug

The first release did three things, and those three are still the backbone: partner lookup by tax number from NAV (name, registered office, legal form, validity of the tax number), login and permissions, and the basics of stock management — an item master with CSV import and export, goods receipt and transfers.

The principle we settled on the very first day: master data should come from an official source, not from typing. A contractor's partner list from the tax authority is more accurate than any spreadsheet — and if a tax number becomes invalid, the system re-checks it daily and logs the change 1.38.0.

The same day two small stock features requested by the technicians went in: product image lookup by manufacturer and part number 1.2.0, and serial-number tracking — for serialised items the serial number is mandatory at goods receipt, and the system checks the count and duplicates 1.12.0.

In mid-August the Controlling module launched 1.40.0: cost records by category (payroll, rent, vehicle costs, invoices, other), a stock value report, and its own permission. The NAV technical user credentials are entered in Settings, encrypted, and a Test button verifies the connection with a real query 1.49.0 — no files to edit on the server.

From there it was a straight road to the invoices. The system automatically retrieves incoming (supplier) invoices every night from the NAV Online Invoice system, broken down by supplier and month, retroactively too 1.50.0 — and your own outgoing invoices as well 1.54.0. The revenue side is thus up to date without any manual entry. The line items of each invoice (product, quantity, unit price, VAT) can be viewed directly 1.62.0.

Finance · Incoming invoices from NAV
P1network — list of incoming invoices retrieved from NAV with categorisation
Incoming invoices from NAV: the yellow bar shows how many invoices await categorisation; per row a cost category, goods receipt or ignore.

Goods receipt from an e-invoice: no more retyping 1.64.0 · 25 Aug

This is perhaps the most important feature of the month, because it removes the most manual work from the storekeeper. From an incoming NAV invoice, a goods receipt can be prepared with one click: the system downloads the invoice lines and offers to match them to products in the item master — anything missing can be added as a new item right there. On save the stock increases and the invoice moves to the "received" status.

If you don't want to keep the material in stock (because it was installed on site straight away), the same invoice is recorded as a cost immediately with the "Materials (non-stock)" category. The program never books anything on its own: you confirm every invoice.

Stock · Goods receipt
P1network — goods receipt form with target warehouse, supplier and document
Goods receipt: target warehouse, supplier, document type and attached document, currency and exchange rate — started from a NAV invoice, the lines arrive pre-filled.

Stock: issues, full movement tracking, editable movements 1.20.0–1.94.0

Stock · Warehouse
P1network — warehouse stock view with stock value and item list
Stock is not a number kept by hand: it is calculated live from goods receipts, issues and transfers.

Equipment module: your clients' passwords behind two-factor authentication 1.21.0 · 11 Aug

For a security-system contractor the most sensitive data is not the invoice but the login credentials of the clients' systems: recorders, alarm panels, access control, network devices. The Equipment module keeps these per client and per site — passwords are stored encrypted with a separate key, viewing them requires two-factor (TOTP) authentication, and every action is logged.

The Activity log was completed the same day 1.18.0: every meaningful change (who, when, what) can be looked up on a dedicated admin page — saving a partner, categorising an invoice, viewing a password, login attempts.

Stock · Equipment · View access
P1network — viewing access credentials with a six-digit two-factor code
The View button asks for the six-digit code from the authenticator app; only then does it show the IP address, username and password.

Profit the accountant's way, VAT, receivables 1.59.0–1.80.0

Once both incoming and outgoing invoices came from NAV, it became possible to build the company's financial picture from real turnover rather than manual plan figures:

Controlling · Revenue and result
P1network — revenue and result report with revenue, costs, result and cash-flow tiles
Revenue, costs and result net by fulfilment date; cash-flow result gross; receivables — for a period, with a monthly breakdown.

System: forgotten password, ticketing, refreshed interface 1.41.0–1.78.0

To close the month: the completion certificate 1.95.0 · 31 Aug

On the last day of the month the completion certificate went in — the document with which the client confirms that the work is done, and on the basis of which the invoice can be issued. You pick the Client and the Contractor from the partner master, the total of the items and the amount in words are calculated automatically; issued certificates can be looked up, edited and printed.

Cases · Completion certificate
P1network — issuing a completion certificate
Issuing a completion certificate: client and contractor from the partner master, items, amount in words, signatories.

With that, by the end of August the first half of the chain was in place: partner → invoice from NAV → goods receipt → stock → controlling → completion certificate. What was missing — cases and quotes, rosters, on-site surveys, digitally signed worksheets — came in September; that is what the next post is about.

Want to see it on one of your own jobs? In a 30-minute online demo we walk through it: quote, materials, roster, invoice.

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