Fiscal Compliance
Cloud POS is designed to comply fully with the Technical Instructions for EFD Suppliers. This page explains how the system ensures compliance with fiscal regulations.
SDC Authentication
When Cloud POS starts an operation, the POS and the V-SDC (Virtual Secure Digital Controller) are mutually authenticated. This happens automatically when you select a certificate on the Create Invoice page:
Your PFX certificate is used to authenticate with the V-SDC over HTTPS
The V-SDC verifies the certificate and returns the current configuration (tax rates, environment parameters)
Only after successful authentication can invoices be created
This mutual authentication ensures that only authorized POS systems with valid certificates can issue fiscal invoices.
SDC Communication Protocol
Cloud POS communicates with the V-SDC using HTTPS protocol as documented in the Technical Instructions for EFD Suppliers. All communication is encrypted with TLS.
What the POS Sends (Invoice Request)
The POS sends the following data to the V-SDC for fiscalization:
Invoice Type and Transaction Type
Payment method(s)
Items — each with GTIN, name, quantity, tax rate labels, and total amount
Cashier identification (optional)
Buyer ID (TIN) and Buyer Cost Center ID (optional, for B2B)
Reference Number and Reference Date/Time (when applicable)
Date and time of issue
What the V-SDC Returns (Invoice Result)
The V-SDC signs the invoice and returns the fiscal result, which includes:
Invoice Number — a system-wide unique identifier in format RequestedBy-SignedBy-OrdinalNumber
Invoice Counter — generated by the V-SDC
SDC DateTime — the official timestamp for tax calculation and reporting
Verification URL and QR Code — for invoice verification
Tax breakdown — totals per tax category, calculated by the V-SDC
Digital signature — cryptographic proof of authenticity
Journal — the textual representation of the fiscal invoice
The POS displays all returned data exactly as received, without modification.
Prohibited Functions
Cloud POS enforces the following restrictions as required by regulation:
Cannot Issue Without SDC Connection
The POS cannot issue a fiscal invoice if it is not connected to the V-SDC. The Fiscalize button is only active when the POS has an active, authenticated connection to the SDC. If the connection is lost, the POS will not allow invoice creation.
Cannot Edit SDC Responses
The POS does not omit or edit any information received from the V-SDC as part of the invoice response. All fiscal metadata — invoice number, counter, SDC time, tax breakdown, QR code, and verification URL — is displayed and printed exactly as returned by the SDC.
No Sales Without Fiscal Invoice
It is not possible to register a sales amount without issuing a fiscal invoice. Every sale processed through Cloud POS results in a fiscalized invoice signed by the V-SDC. There is no "offline" or "unrecorded" sales mode.
Complete Header Information
The header of every fiscal invoice includes all data returned by the SDC. No issuer identification data is omitted from the receipt.
Invoice Cancellation
Cloud POS supports cancelling issued invoices as described in the Technical Instructions. When an invoice is cancelled:
A new fiscal cancellation document is created
The cancellation document references the original invoice
Both documents are reported to the tax authority
The original invoice is marked as Cancelled in the system
See Copy, Refund, and Cancel for step-by-step instructions.
Payment Type Compliance
Cloud POS registers all payment types as documented in the Technical Instructions for EFD Suppliers:
Cash
Card
Check
Wire Transfer
Voucher
Mobile Money
Other
Only these approved payment types can be selected. See Payment Types for details.
Tax Rate Compliance
Cloud POS never uses any tax rates other than those received from the V-SDC. Tax rates cannot be manually entered, overridden, or modified. When the tax authority updates rates, the changes are automatically reflected the next time the POS connects to the V-SDC.
See Tax Rates for details.
Electronic Journal
Cloud POS provides access to a complete list of all issued invoices. From the POS Invoices page, you can:
View a list of all invoices with filtering by taxpayer, location, certificate, status, and date range
Search for specific invoices
View the full details of any invoice, including its verification URL
Retrieve the fiscal journal for any invoice on demand — the journal is fetched from the V-SDC verification service when requested and displayed in the invoice details dialog
This provides an electronic journal with the ability to look up and verify any fiscal transaction.
Next Steps
Tax rates — How tax rates are managed
Invoice types — All invoice and transaction types explained
Payment types — All supported payment methods
Managing invoices — Electronic journal and invoice history