Finance · Accounts payable · Custom automation

Invoices that don't add up.
A system that makes them add up.

The same hours every month spent matching invoices against purchase orders, delivery notes and payments. Differences nobody can trace. A supplier who billed the wrong prices. A delivery note with no matching invoice. We build the system that does this work for you - automatically, on your rules, inside your own network.

"In three weeks we found more discrepancies than we'd caught in a whole year." - Distribution client, EU

No commitment. A direct reply from the developer.

Logic tuned to your product codes and suppliers Financial data stays inside your network No recurring subscription You always talk to the developer
4–8 hrs
The monthly average spent on manual reconciliation in SMEs handling 50+ invoices a month. High-cost hours spent comparing columns in a spreadsheet - every month, no exceptions.
8–15%
Of invoices contain at least one discrepancy against the order or the delivery note. Prices changed without agreement, wrong quantities, mismatched product codes: errors that cost money and can't be found by hand.
Zero
Undetected discrepancies after a custom reconciliation system goes live. Not reduced - removed from the process. The system flags every anomaly before it becomes a problem.
The problem

Manual reconciliation
hides errors instead of finding them.

It's not a one-time job. It repeats every month, with the same errors piling up - and the ones you never find cost twice as much as the ones you find late.

Invoice vs order: prices and quantities that don't match

The supplier applied a price different from the order. The billed quantities don't match the delivery note. By hand, across dozens of invoices a month, these differences slip through - and get paid anyway.

Double payments, or invoices paid without goods received

An invoice issued twice by the supplier. A payment already processed that was never matched. Without a system that cross-checks the data, these cases only surface once the damage is done - often months later.

Open items nobody can track

Orders received with no invoice. Invoices received with no matching order. Advance payments still to be reconciled against balances. Every exception needs a manual search - and they pile up until they become an urgent month-end problem.

A supplier changes format and the process breaks

You were using a spreadsheet to reconcile. The supplier updates their system and changes the file structure. Everything you built by hand stops working - and you start over from scratch.

Why generic software isn't enough

An ERP reconciles the standard cases.
A custom solution reconciles your cases.

The difference isn't the technology - it's that every company has product codes, suppliers and exception rules no generic software knows about.

Standard ERP / accounting software

Built for the average case

  • Doesn't know your supplier-specific agreements
  • Doesn't handle custom tolerances on prices and quantities
  • Doesn't know certain product codes have different aliases between your system and the supplier
  • Exceptions still need manual handling
  • Reports don't reflect your own anomaly categories
  • Updating the rules means touching the software - time and cost
Custom Levixflow solution

Built for your case

  • Knows your tolerances by supplier and by product category
  • Handles the mapping between internal codes and supplier codes
  • The exception rules are yours - editable without touching the code
  • Produces a structured anomaly report, ready for review
  • Plugs into your existing flows without changing your ERP
  • If a supplier changes, you update the configuration - not the system
Why financial data never leaves the company

Your purchasing data
is competitive intelligence.
Don't share it.

Purchase prices by supplier, volumes, reserved discounts, payment terms, real margins per product - this data shows exactly how your supply chain works. Every cloud service that processes your invoices sees all of it.

GDPR and third-party data. Supplier invoices can contain personal data, tax IDs and confidential commercial terms. Every external system that processes them is a point of risk. With a solution that runs inside your network, that risk simply doesn't exist.

No data on third-party servers
Reconciliation happens directly inside your own infrastructure. No invoice, no order, no purchase price ever leaves your company network.
on-premise · your network
Zero dependency on external services
No subscription that can change price, no SaaS that can shut down. The system is yours - it works even offline, even if the software vendor disappears.
operational autonomy · zero lock-in
Updatable when the rules change
Adding a supplier, changing price tolerances, adding a product category? The configuration updates in minutes - no waiting for a software release.
direct configuration · your code
Cloud / SaaS service
Your invoices on someone else's servers
Fixed or variable monthly subscription
You depend on the vendor's updates
Support via tickets
Levixflow solution
Everything inside your company network
Pay once, it's yours for good
You decide when and how to update it
You talk to the person who built it
How it works

I don't start from the code.
I start from your flow.

Before writing a single line, I learn how your process works today - where the discrepancies come from, which exceptions you handle by hand, where the most time is lost.

01

Flow analysis

A map of the systems involved: ERP, e-invoices, delivery notes, purchase orders. Identifying the data sources, the formats and the current exception rules. No technical spec required from you.

02

Building the engine

Development of the system tuned to your rules: code mapping, per-supplier tolerances, order-delivery note-invoice matching logic. Exportable configuration, editable without touching the code.

03

Reporting and exception handling

Every cycle produces a structured report: reconciled invoices, anomalies flagged in detail, exceptions to review. Your team steps in only where needed - the rest is automatic.

Real project

A distributor with 200+ invoices
a month and no control system.

In production

Hours of manual reconciliation in a spreadsheet every month. Discrepancies found too late. Payments already processed, hard to recover.

The company received invoices from more than 30 suppliers, each in a different format. The check was manual: an operator compared the invoice lines against the purchase order in a spreadsheet, looking for price and quantity differences. With 200+ invoices a month the process took 6-8 hours - and some discrepancies still slipped through.

We analysed the document flows, mapped internal product codes against each supplier's codes, and defined acceptance tolerances by category. The system reads the invoices, cross-checks them with orders and delivery notes, applies the rules and produces a report with anomalies ranked by priority.

The system runs locally on an existing company server. No data leaves the network. No external subscription. The report is generated automatically and sent to the finance team every morning.

Python · pandas Structured e-invoice (XML) Code mapping on-premise Multi-supplier
Problem

6-8 hours of manual checking each month

Over 200 invoices a month, 30+ suppliers in different formats. Discrepancies not found in time, double payments discovered weeks later.

Analysis

Code mapping and tolerance rules

An inventory of suppliers, document formats and the matches between internal and supplier codes. Defining acceptable tolerances by product category.

Solution

An automatic reconciliation engine

Reading structured e-invoices, matching with purchase orders and delivery notes, applying tolerance rules, a daily report with classified anomalies.

Result

From 6-8 hours to under 30 minutes of review

The team only acts on flagged anomalies. Discrepancies found before payment. Zero double payments. A new supplier = a new configuration in under an hour.

Before you write to me

I'm not the cheapest accounting software.

If you have 10 invoices a month and a spreadsheet works, I'm not the right service for you. Modern accounting tools have built-in features that cover the standard cases.

What I do is different: I analyse your specific flow - your suppliers, your codes, your exceptions and the rules no generic software knows - and build the system that reconciles exactly your documents, inside your infrastructure, without your financial data ever leaving the company.

If you have 50+ invoices a month, several suppliers in different formats, and you lose hours every month on a process you already know should be automatic - then it's worth talking.

"You stood out from more than 60 candidates because you had a clear plan. You explained exactly how you'd tackle the problem - that gave me the confidence to choose you."
Technical lead, large company - Norway
Document flow analysis · Control automation · Multi-supplier reconciliation
Contact

Tell me how
it works today.
The rest follows.

No technical spec required. Tell me how many invoices you process a month, from how many suppliers, which ERP you use and where the process breaks. From there I can tell whether I can help.

First analysis free - no commitment
A direct reply from the developer
Written quote before we start
You pay per milestone - work already reviewed
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