Last updated: March 3, 2026
This documentation hub explains how to configure each platform module and run invoicing workflows without technical friction.
What you will find here
Invoicing in Spain
Foundational guide to numbering, minimum invoice content, statuses, and the practical framework for issuing invoices in Spain.
Getting started
Initial checklist to create your account, activate your business, and prepare your first invoice.
Business setup
How to define fiscal data, numbering, default taxes, and payment details.
Clients
Create and edit clients, assign identifiers, and follow fiscal data best practices.
Invoices
Creation flow, statuses, rectifications, exports, and key editing rules.
Veri*factu
What it is, when it applies, available compliance modes, and what to review before enabling a compatible flow.
VAT and IRPF
Practical guidance to choose tax rates, understand withholding, and avoid common service-invoice mistakes.
Rectifying invoices
When a rectifying invoice is required, what it must contain, and how to avoid fixing issued invoices the wrong way.
Public API
API keys usage, available routes, and interactive OpenAPI access.
API use cases
Real integration patterns for invoice sync, client lookups, reporting, and internal workflows.
Security
Access controls, auditability, and practical security recommendations.