Your system stays as it is
It needs no knowledge of Peppol, UBL or encryption.
Asseco Solutions · Helios · Peppol
APEX Agent — a bridge between your system and the Peppol network.
Connect Helios, SAP, KROS or any other system to the Peppol network and the Slovak Financial Administration without changing its code. Issue and receive e-invoices even before e-invoicing becomes mandatory in Slovakia on 1 January 2027.
Mandatory e-invoicing in Slovakia starts in —
1 Jan 2027
mandatory e-invoicing for VAT payers in Slovakia
0
open ports — outbound HTTPS 443 only
128 MB
of RAM is enough to run the Agent as a service
4 channels
disk · SFTP · REST API · database
01 · What APEX Agent connects
One Agent for all your systems
Your accounting or enterprise software stays exactly as it is. APEX Agent connects it to the Peppol network and the Slovak Financial Administration.
Your systems
Click a system to see how it connects.
… and any other system that can save a document to disk or SFTP, send it via REST API, or keeps it in a database.
HELIOS = Asseco Solutions' own product
APEX
Agent on-site, in your internal network
Agent on-site, in your internal network
-
PEPPOLCustomers and suppliers at home and abroad, through one network
-
Slovak Financial AdministrationAutomatic TDD (tax data document) report, no action needed
-
Status back to your systemDelivered or failed — you know straight away
4 connection methods
How your system connects
APEX Agent exchanges documents with your system in one of four ways. Pick a system above to see which one we recommend.
- Disk / folderYour system saves the document to a folder on a local disk or network share. The Agent picks it up, converts and sends it, and writes received invoices and statuses back to a folder.
- SFTPSame principle as a folder, but via a secure SFTP server — ideal when your system runs on another server or in the cloud.
- REST APIYour system sends documents to the Agent via REST API and reads the delivery status back — no files, instantly.
- Database connectionThe Agent connects directly to your system's database (e.g. MS SQL), reads documents ready to send and writes back statuses and received e-invoices.
List of systems based on implementations to date. Product names are trademarks of their respective owners.
How it works
APEX Agent as a bridge between your system and the Peppol network
The Agent runs on your premises. It takes a document from your system, translates it into the Peppol format and securely hands it over to the Asseco Solutions cloud.
On-site · internal network
Your systemHelios, SAP, Epicor, KROS…
Disk
SFTP
REST API
Database
document exchange
APEX Agentmapping · routing · retries
Firewall · outbound HTTPS 443 only
Asseco Solutions · cloud
APEX Access Pointcertified Peppol access point, EN 16931 validation
Access verificationASOL IAM
Peppol network and government
Business partnerany Peppol access point worldwide
Slovak Financial Administrationautomatic TDD report
No open ports
The Agent only communicates outbound via HTTPS 443.
Multiple companies in one Agent
Each company has its own Peppol identity.
Reliable delivery
After an outage, it retries sending and returns the status to your system.
Formats
Supported formats, configurable in the interface
No need to rework your system's output. You set the format in the APEX Agent mapping profile — and it works in both directions.
What your system sends
{ }
IDocstandard SAP data exchange format
{ }
ISDOCCzech XML standard for electronic invoices
{ }
EDIFACTinternational EDI standard for business documents
Mapping profile
in APEX Agent
Set up in the Agent interface, separately for each company (tenant). No programming on your system's side.
What goes into the Peppol network
XML
UBL 2.1
Peppol BIS Billing 3.0 · EN 16931
The format accepted by every Peppol access point in the world.
In both directions: the Agent translates received UBL e-invoices into the format you configure for your system.
Setup
What you need to get started
Three things on your side. Asseco Solutions takes care of the rest — network registration, access verification and reporting.
-
01
Server
A Windows server on which the Agent runs as a service (Linux with manual installation).
128 MBRAM · 500 MB disk · port 443 outbound -
02
Document exchange channel
One channel per company and a service account with read and write permissions.
4 optionsdisk · SFTP · REST API · DB -
03
Peppol identity
Registration in the Peppol network for each company. Access credentials are issued by Asseco Solutions.
0245 + DIČyour Peppol address (DIČ = Slovak tax ID)
The Agent keeps processed records for 30 days and then deletes them automatically. Companies' access credentials are stored encrypted.
02 · Configuration and monitoring
An overview of every document sent and received
A single tool tracks all documents travelling in both directions between your system and the Peppol network.
24 / 24sent0failed
- 1Summary at a glanceHow many documents have been sent, are pending or have failed.
- 2Status of every documentSent, delivered and number of attempts.
- 3Received documentsLatest incoming documents and their confirmation.
- 4System administrationTenants, users, mapping profiles, licence.
- 1Filter by statusAll, pending, sent, failed and unknown tenant.
- 2Status in the AgentWhether the document has left your network.
- 3Delivery status
ACCEPTED→DELIVERED— the invoice has reached the recipient. - Document detailOpen the invoice preview and its XML content (UBL Invoice) with a single click.
- 1Who sent it and to whomPeppol ID of the sender and the recipient, document type and status.
- 2Result in your systemDelivery report — with the exact reason if something goes wrong.
- 3Preview and XMLView the invoice before any further processing.
- When a document ends up in quarantineUnknown document profile · supplier not found in the code list by Peppol ID, VAT ID (IČ DPH) or company ID (IČO) · currency not in the code list · no recognised lines.
- 1Tenant = a company connected to PeppolEvery entity that sends or receives e-invoices has its own record with a Peppol Sender ID.
- 2Integration modeSAPI or API, APEX URL and access keys depending on the selected mode.
- 3Active / inactiveEnable or suspend a tenant with a single toggle.
Configuration · step 1
Tenant registration
A tenant is a company connected to Peppol. Every entity that sends or receives e-invoices via APEX Agent has its own record with a Peppol Sender ID.
Required details when creating a tenant
Configuration · step 2
User registration
Each user of APEX Agent has their own account with defined permissions and assignment to specific tenants.
Required and optional account details
03 · Invoices in Helios
Issuing an invoice in Helios — just as before
A standard domestic invoice is issued as before and sent to APEX Agent in a single step.
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1
Invoice header
Customer, dates, currency, document number, payment method, IBAN.
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2
Invoice lines
Quantity, unit of measure, unit price, VAT rate.
-
3
Export to APEX
Action eFaktúra → Export efaktúry do Peppol (export e-invoice to Peppol)
-
The document appears among the outgoing documents in APEX Agent — and the Agent sends it to the Peppol network.
E-INVOICE
FA-2027-001
SupplierYour Company Ltd
CustomerBusiness Partner plc
- Licence and implementation€2,000.00
- Support services€142.00
- VAT 23%€492.66
TOTAL incl. VAT€2,634.66
- Helios → APEX Agent
- EN 16931 validation
- Delivered via Peppol
- TDD report → Financial Admin.
Mandatory fields
Mandatory fields for e-invoice validation
Peppol BIS Billing 3.0 / EN 16931 (UBL) — a missing field means the document is rejected or quarantined.
| Field (BT) | What it contains | Example from Helios |
|---|---|---|
BT-1 / BT-2 | Invoice number and issue date | 2002600054 · 23 Sep 2026 |
BT-3 | Document type (380 invoice, 381 credit note, 383 debit note…) | 380 — Invoice |
BT-5 | Document currency | EUR |
BT-27, BT-31, BT-44, BT-48 | Name, address and VAT ID of both the supplier and the customer | Supplier → Customer |
EndpointID | Electronic (Peppol) address of both parties | iso6523-actorid-upis::0245:2020447990 |
InvoiceLine | At least one line with quantity, price and VAT rate | 1 pc · €10.00 · 23% VAT |
BT-106 – BT-115 | Totals of the taxable amount, VAT and amount including VAT must be mathematically consistent | €10.00 + €2.30 = €12.30 |
PaymentMeans | Payment details | IBAN, payment method |
The exact mapping to SK CIUS and Peppol BIS Billing 3.0 is described in the Helios iNuvio documentation — E-Faktúra (SK), new obligations from 1 January 2027.
Received invoices
Receiving e-invoices into Helios
Today
Import via General Imports
Today, received e-invoices reach Helios through the generic General Imports module (Všeobecné importy).
- Generic import, not specifically tailored to e-invoices
- If the data do not match, the document ends up in quarantine
- Errors have to be traced and resolved manually
In development
Dedicated Received Invoices window
A new window in Helios modelled on the QASIDA solution, with subsequent import into the Supplier Invoices module (Dodávateľské faktúry).
- Clear listAll received e-invoices with their processing status in one place.
- Check before importCheck and correct the data before the document enters your accounting.
- Direct importThe document goes straight into Supplier Invoices in Helios.
04 · Deployment scenarios
No two companies are the same
See how e-invoicing fits into your environment — from connecting your system directly to multiple sources and forwarding to your accountant.
Scenario 01 · Direct integration
ERPAsseco APPeppol
Your system connected directly to Peppol
You have one accounting or enterprise system that issues all your invoices. Sending runs automatically via APEX Agent or the REST API — no manual work.
Scenario 02 · Multiple systems
ERP · e-shop · ExcelInvoice MgrAsseco AP
Invoice Manager as a central hub
Do you have several systems, not all of them Peppol-ready? QASIDA Invoice Manager brings together input from your ERP, e-shop, Excel or manually entered invoices and sends it all through a single channel.
Scenario 03 · External accountant
PeppolInvoice MgrAccountant
Forwarding invoices to your accountant
In Invoice Manager, you mark which sent or received invoices should go to your external accountant — via Peppol, an API connection to their system or direct access.
QASIDA Invoice Manager
A web app for e-invoices — even without your own system
Issue, receive, approve and send e-invoices directly in your browser. For companies without an ERP and as a central hub for multiple systems.
- Dashboardinvoicing overview and the E-invoice and Peppol wizard
- Partnersfind a company in the register by company ID; the Peppol ID fills in automatically
- Invoicescustomer and supplier documents, payments and history
- Peppol boxinbox of received and outbox of sent e-invoices with their status
- Imports and settingsnumber series, VAT rates, templates, workflow
What you can do in Invoice Manager
The whole invoice lifecycle in one place — from issue through approval to payment.
Issue invoices
Invoices, advance invoices, credit notes and settlement invoices. Follow-up documents are created without retyping.
Send in four ways
Via Peppol, by email, by post, or issue without sending. Advance invoices are not sent via Peppol.
Receive and approve
Invoices from Peppol arrive protected against changes. Approval is driven by a workflow with assignment to a colleague.
Partners in a few clicks
Enter a name or company ID and the details are filled in from the register. The Peppol ID (0245 + DIČ) is pre-filled.
Track payments and status
Payments, invoice statuses and the full history in the Activity tab. PDF preview at any time.
AI assistant and multiple companies
The assistant helps you right in the app (Ctrl + I). Switch between companies and languages with a single click.
Source: QASIDA Invoice Manager user guide — wiki.assecosolutions.sk
05 · Summary
Mandatory e-invoicing in Slovakia from 1 January 2027
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Q2 2026 – Dec 2026
Voluntary phase — testing the sending and receiving of e-invoices
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1 Jan 2027
Mandatory for VAT payers — domestic B2B / B2G supplies
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1 Jul 2030
Extended to all taxable persons and cross-border supplies
Format
EN 16931 / UBL 2.1, Peppol BIS Billing 3.0 profile, transmission via the Peppol network (five-corner model).
Penalties
Up to €10,000 for a first breach, up to €100,000 for repeated breaches (Section 85o of the Slovak VAT Act).
Source: Helios iNuvio — E-Faktúra (SK), new obligations from 1 January 2027 · public.helios.eu/inuvio
Choosing a partner
Why Asseco Solutions as your digital postman
Six criteria worth basing your decision on — and we meet every one of them.
Experience implementing legislation
We are not a start-up created just to be a digital postman.
Legislative methodologists in the team
Quality tools that go beyond invoice delivery itself.
Accredited by the Peppol Authority
Compliance with the Peppol network — ISO 27001, NIS2 support.
International support roadmap
We build connections to other EU countries before they become mandatory.
Business software vendor
We develop our own accounting and enterprise software (ERP).
Support in Slovakia
A local team in Slovakia, no foreign call centres.
You designate your digital postman on the portal of the Financial Administration of the Slovak Republic and can change it in future — you are not tied in for good.
Pricing
APEX Agent and Digital postman pricing
Monthly flat fees, prices excl. VAT.
APEX Agent for €75 a month — everything included, available today
One monthly fee and everything you need to connect your system to the Peppol network.
| What you get | APEX Agent€75 / mo. |
|---|---|
| Connectivity | |
| 4 connection methodsDisk, SFTP, REST API or a direct database connection to your system | Included |
| Multiple companies in one AgentEach company (tenant) has its own Peppol identity | Included |
| Runs on-site, in your networkService on a Windows server (Linux with manual installation), 128 MB RAM | Included |
| No open portsOutbound-only communication over HTTPS 443 | Included |
| Formats and mapping | |
| Mapping profilesIDoc, ISDOC, EDIFACT → UBL 2.1 / Peppol BIS Billing 3.0 | Included |
| Both directionsReceived e-invoices converted to your system's format | Included |
| No programmingSet the format in the Agent's interface, separately for each company | Included |
| Delivery and compliance | |
| Sending and receiving via PeppolCustomers and suppliers at home and abroad | Included |
| Automatic TDD reportReporting to the Slovak Financial Administration without your involvement | Included |
| EN 16931 validationChecked in the certified APEX Access Point | Included |
| Reliable deliveryRetries after an outage and returns the status to your system | Included |
| Monitoring and administration | |
| Agent web interfaceOverview, outgoing and incoming documents with status | Included |
| Invoice and XML previewDocument detail in one click | Included |
| Quarantine with exact reasonYou know why a document failed and what to fix | Included |
| Users and permissionsUser / Administrator roles, assignment to companies | Included |
| Agent updatesVersion management right in the Agent's interface | Included |
| Security and support | |
| Encrypted credentialsCompany access credentials are stored encrypted | Included |
| Automatic record deletionProcessed records are deleted after 30 days | Included |
| Peppol network registrationPeppol identity and credentials provided by Asseco Solutions | Included |
| Asseco Solutions supportLocal team in Slovakia | Included |
E-invoice delivery is charged according to the Digital postman package you choose below.
Technology for business, solutions for people.
Connect your system to the Peppol network before 2027
Our experts will guide you through installing APEX Agent, registering in the network and sending your first e-invoice.