Verifactu checklist: 9 requirements your software must meet
The nine requirements of article 8 of Spanish Royal Decree 1007/2023, turned into concrete questions for your vendor. With the real 2027 deadlines and who is covered under article 3.
Release notes · Sistemas
The changelog.
What we deploy, what we learn and the postmortems we share. Written by engineers, for people who operate systems.
Operational Copilot on Sage 200
We have generalised the bank reconciliation and invoice-reading agents for any Sage 200 client. Operational in 4–6 weeks.
- Automated PSD2 bank reconciliation
- Supplier invoice OCR with human validation above threshold
- Metrics dashboard: accuracy, cost, escalation rate
Targeted phishing contained in 14 minutes
Open postmortem of a real incident at an industrial client. What the SIEM detected, how the SOC responded and what we changed afterwards.
- MTTD 2 min · MTTR 14 min
- Zero data exfiltration
- Three playbook improvements applied
Offline-first field logbook
The grower's app now runs for whole days offline and syncs on returning to the winery's network range.
- Sync queue with conflict resolution
- Geotagged photos compressed locally
- Offline PAC validation
Strangler-fig: cloud migration with zero downtime
How we migrated a public service with 28,000 users/day from an on-prem data centre to AWS with zero maintenance windows.
- 0 minutes of downtime
- RTO 12 min validated in gameday
- −34% monthly cost vs data centre
All articles
Migrate from ContaPlus to CONTASOL Without Losing Data
Migrating from ContaPlus to CONTASOL isn't just about getting the import to finish: it means reconciling balances, journal entries and taxes while keeping your history always accessible. Here's how to do it with verified backups, a test pilot and a safe rollback plan.
Read articleVerifactu 2027: A Plan to Adapt Your Software
Adapting to Verifactu isn't solved by flipping a switch on the last day: it means taking stock of how the company really invoices, demanding evidence from the vendor, testing corrections and preparing contingencies before the 2027 deadlines. This guide turns the regulation into a phased rollout plan, with a test matrix and a checklist for management.
Read articleVerifactu vs B2B E-Invoicing
Verifactu and B2B e-invoicing look like the same obligation, but they are not: one controls the invoicing system before the AEAT, the other regulates structured exchange between businesses. This guide separates both frameworks, their calendars, and proposes a common architecture to comply with both without duplicating work.
Read articlePower BI for SMEs: a dashboard that gets used
A Power BI dashboard only earns its keep when it answers real decisions with reliable data. How to define KPIs, build the semantic model, secure it and govern it so your SME actually uses it.
Read articleAplifisa vs a3: A Comparison for Tax Firms
Aplifisa and a3 both compete to run accounting and tax firms end to end: we compare tax, payroll, cloud, migration, integrations and total cost so you can decide on data, not brochures.
Read articleWinery ERP: Traceability, Lots and Costs
What a winery ERP for a Ribera del Duero producer should deliver: from harvest to the shipped bottle, with three-way traceability, tank control, and the real cost of aging and losses.
Read articleERP with AI: Use Cases and Controls
What tasks AI can automate inside an ERP and which controls must never be skipped: permissions, master data, agents with tools, security and traceability, explained with a 90-day plan.
Read articleFACTUSOL and Verifactu: Configuration Checklist
Updating FACTUSOL isn't enough to comply with Verifactu: you need to check the version and its compliance statement, clean up companies and series, test invoices and QR codes, and rehearse contingency procedures before signing off on the installation. This checklist walks through the ten essential steps before activating VERI*FACTU.
Read articleIntegrate WooCommerce with an ERP, No Lost Orders
Connecting the API isn't enough: a reliable WooCommerce–ERP integration needs clear master systems, idempotency, error queues and daily reconciliation so you never lose orders, stock or invoices.
Read articleSecure Microsoft 365 for SMBs: Baseline Setup
Turning on MFA is not enough: a genuinely secure Microsoft 365 tenant combines separate admin accounts, conditional access, managed devices, backups and continuous auditing. This guide sets out the baseline configuration every SMB should review.
Read articleOdoo in the Canary Islands: Costs, Rollout, Support
Rolling out Odoo in the Canary Islands is not just installing an ERP: it requires verifying the Canary tax localisation, configuring IGIC (the local indirect tax) and the SII reporting system, and planning data migration, integrations and support with clear acceptance criteria.
Read articleWhat Security Measures Does ENS Annex II Require and How Are They Applied by Category?
Annex II of RD 311/2022 contains 73 security measures organised across three frameworks. Discover how they are structured, what reinforcement levels each category requires and what evidence you need for the ENS conformity audit.
Read articleWhat Is MAGERIT and What Are PILAR, INES and AMPARO Used for in ENS Compliance?
MAGERIT, PILAR, INES, AMPARO and CLARA are the methodological tools the CCN makes available for risk analysis and ENS verification. This guide explains what each one does, how they relate to each other and when to use them in your compliance project.
Read articleHow to implement Factusol in your SME: a step-by-step guide
Everything you need to know to get Factusol up and running in your company: from installation to preparing for Verifactu 2027.
Read articleFactusol and Verifactu: how to adapt your invoicing before 2027
The Verifactu regulation will take effect in 2027: Factusol is already adapted, but your business must configure it correctly. We tell you everything.
Read articleExporting Factusol invoices to Contasol: close the accounting cycle without rework
Learn how to export Factusol invoices directly to Contasol and eliminate manual journal entry for good.
Read articleAlternatives to Factusol: when to switch and which program to move to
If your business has grown or Factusol no longer covers your current needs, this guide helps you choose the right alternative without losing data or time.
Read articleMigrating from ContaPlus to Contasol: transition guide for accountancy firms
ContaPlus is now Sage 50 and the new licensing model is pushing many accountancy firms to look for an alternative. Contasol, from TeamSystem/DELSOL, is the most common choice. Here is how to migrate without losing data or interrupting daily work.
Read articleContasol and the SII: how to comply with the Immediate Supply of Information
If your accounting firm or company exceeds 6 million euros in turnover and uses Contasol, here is everything you need to know to comply with the SII without incidents.
Read articleContasol vs Holded: which accounting software should an advisory firm choose in 2026
Contasol and Holded solve different problems. We explain which one fits an accounting firm better depending on client volume, tax compliance and cost.
Read articleImplementing Nominasol in a payroll advisory firm: payroll and Social Security without friction
Everything you need to know to set up Nominasol in a payroll advisory firm: from data migration to connection with Social Security.
Read articleNominasol and Social Security: SILTRA, NS Conect@ and TC forms explained
Everything you need to know about connecting Nominasol with Social Security: SILTRA, NS Conect@, contributions and withholding tax forms.
Read articleAplifisa for law and accounting firms: how to digitalise your tax and payroll practice
Aplifisa is the reference suite for tax and payroll advisory firms in Spain. We explain how to implement it without friction and which modules you need based on your firm's size.
Read articleAplifisa vs a3 vs Sage for accounting firms: which software in 2026
We analyse Aplifisa, a3ASESOR (Wolters Kluwer) and Sage 50/200 so that accounting and professional firms can choose with confidence in 2026.
Read articleDELSOL 360: the cloud suite that unifies invoicing, accounting and payroll in one platform
DELSOL 360 unifies invoicing, accounting and payroll in a single cloud environment ready for Verifactu and SII.
Read articleBillin for freelancers: simple online invoicing adapted to Verifactu
Billin is TeamSystem's online invoicing solution designed for freelancers and micro-businesses that need to issue correct invoices, track payments and comply with Verifactu without technical complications.
Read articleDistrito K, the wholesale distribution ERP by TeamSystem: what it is and when to implement it
Distrito K is the advanced TeamSystem ERP for wholesale distribution, large-scale commerce and manufacturing companies: warehouses, delivery routes, production and all commercial operations integrated.
Read articleWhat is TeamSystem and which group software is used in Spain
A clear guide to TeamSystem Spain: who they are, what products they offer, and why thousands of SMEs and accounting firms use them today.
Read articleDELSOL software is no longer free: what changes and what are your options
DELSOL was synonymous with free software for SMEs and accounting firms. Since TeamSystem acquired the company, its flagship products have moved to a subscription model. We explain what the change means, what current plans cost and how to use the transition to modernise your management.
Read articleHow Much Does a Power Platform Automation Project Cost for an SME? 2026 Price Guide
Real indicative ranges, cost factors and common mistakes when budgeting a Power Platform automation project for a Spanish SME.
Read articleHow Much Does a Power BI Project Cost for an SME? Real Prices and Timelines in 2026
A guide to indicative Power BI pricing for SMEs: from €1,500 for a pilot to €25,000 for a complete corporate project, with the factors that determine each range.
Read articleCybersecurity for dental clinics: available grants and minimum requirements in 2026
Which cybersecurity measures a dental clinic must implement in 2026, what health-sector GDPR requires, and how to finance them through the Kit Digital grants.
Read articleCloud backups that actually restore: how to verify your copy is worth anything
Having a copy in the cloud is not the same as being able to restore it. Learn how to verify that your cloud backup truly works before you need it.
Read articleHow Much Does It Cost to Implement HubSpot in an SME in Spain? Real Consultant Prices in 2026
An honest breakdown of what a Spanish SME pays for HubSpot: licence fees by hub, mandatory onboarding and the cost of a consultant or certified partner.
Read articleDigital field notebook with SIGPAC and no mobile coverage: how offline mode works on the farm
Offline mode is the Achilles heel of many agricultural solutions. We explain how a digital field notebook should really work when there is no network signal on the plot.
Read articleHow much does it cost to develop an internal web application for an SME in Spain in 2026?
A market-price guide for developing internal web applications in Spanish SMEs: from a simple dashboard to a full management system.
Read articleHow much does it cost to implement an agri-food ERP in a Spanish SME: real costs and timelines
A practical guide with indicative cost ranges and real timelines for implementing an agri-food ERP in a Spanish SME, from software selection to go-live.
Read articleThe Best ERP for Small Construction Companies Under 50 Employees in Spain in 2026
Which ERP really suits a small construction company in Spain: essential modules, cost ranges and the five most common mistakes when choosing.
Read articleAutomating supplier invoice processing in your ERP with an AI agent: real results
An AI agent connected to your ERP can read, validate and post supplier invoices without any employee touching them: here is how it works in practice.
Read articleHow Much Does It Cost to Implement a Wholesale Distribution ERP for an SME in 2026?
A guide to indicative prices for implementing a wholesale distribution ERP: which budget lines to include and which factors can double the cost.
Read articleHow Much Do Dynamics 365 Business Central Licences Cost for an SME in 2026?
Updated pricing guide for Dynamics 365 Business Central: how much each licence type costs, which factors push the total bill up, and how to calculate a realistic budget for your company.
Read articleHow to choose an ERP for a 10-50 employee SME: key criteria
The criteria that determine whether an ERP fits your company or will end up being an expensive burden: a jargon-free guide for the director of a 10-50 person SME.
Read articleHolded vs Odoo: when your SME needs to switch ERP
Holded is agile and affordable to get started; Odoo is powerful and extensible to grow. We explain when each one makes sense and what signals indicate it is time to switch.
Read articleMigrating from a legacy ERP to a modern one: from Sage 50 to Sage 200 or Odoo
When the ERP you have been using for ten years becomes the biggest bottleneck in your business and how to plan the change without halting operations.
Read articlePower Platform for SMEs: Power Apps, Automate and BI without coding
Power Platform lets an SME digitalise processes, automate repetitive tasks and visualise data without writing a single line of code.
Read articleDigital working time records: what software complies with the law in 2026
Working time recording has been mandatory since 2019 and penalties are rising in 2026. We analyse which time-tracking software genuinely complies with the law and what you should demand from it.
Read articleERP for wineries in Castilla y León: management and traceability
What an ERP must manage in a Ribera del Duero or Rueda winery: vineyard, winemaking, traceability, FEGA compliance and connection with the distribution channel.
Read articleERP for retail commerce: POS, stock and sales in one system
A retail ERP unifies the point of sale, inventory and customer data: here we explain which functions are essential and how to choose the right system.
Read articleERP and WMS for distribution: how to truly control your warehouse
ERP and WMS are not the same thing: understanding the difference — and knowing when you need both — is the key to avoiding lost stock, picking errors, and unhappy customers.
Read articleAgri-food ERP: batch traceability and expiry dates explained
Why batch and expiry-date traceability is the core of any ERP for the food industry, and how to implement it without friction.
Read articleERP for professional services: hours, projects and real profitability
Consultancies, law firms and agencies that manage projects by the hour need an ERP very different from a factory's: real-time time tracking, per-project margin control and integrated recurring billing.
Read articleCustom online store vs template: what to choose and why the decision matters
The choice between custom development and a template determines the performance, conversion rate and total cost of your e-commerce for years to come.
Read articleB2B Customer Portal: what features it must have to actually work
A B2B portal without the right features is just an interactive PDF. We explain what it must include to reduce calls, speed up orders and retain your clients.
Read articleMigrating to the Cloud: Steps, Risks and Real Savings for SMEs
Migrating to the cloud is not about copying files to the internet: we explain the real steps, the risks nobody mentions and the savings you can genuinely expect.
Read articleMicrosoft 365 for SMBs: what's included and how to implement it
Discover which Microsoft 365 plan fits your SMB, what applications it includes and what steps to follow to implement it without chaos or interruptions.
Read articleVerifactu: what it is, deadlines and how to adapt your invoicing software — Summum Sistemas
Verifactu is the verifiable invoicing registration system required by the Spanish Tax Agency: we explain exactly what it is, who must implement it and when.
Read articleMandatory B2B E-Invoicing in Spain: Final Deadlines of the Crea y Crece Act — Summum Sistemas
Royal Decree 238/2026 ends the uncertainty: we explain which companies are affected, when, and what your ERP or invoicing software must do before the deadline arrives.
Read articleHow to Integrate Your Online Store with Your ERP (Odoo, Sage, Business Central) — Summum Sistemas
Synchronising your online store with your ERP eliminates stock errors, doubles order management speed and prepares your business to scale.
Read articleHow Much Does It Cost to Implement an ERP in an SME in 2026? — Summum Sistemas
Real ERP cost ranges for SMEs in 2026: from licence to go-live, with a comparative table by solution and the factors that most drive up the project budget.
Read articleOdoo vs Sage 200 vs Business Central: ERP comparison for SMEs 2026
Three ERPs dominate the SME market in Spain: Odoo, Sage 200 and Business Central. We explain the real differences and which one fits your company.
Read articleINCIBE and ACTIVA Cybersecurity Grants 2026 for SMEs: complete guide to programmes and funding
An up-to-date overview of the main cybersecurity support programmes for SMEs in 2026: what each one covers, who it targets and how to access them without unnecessary red tape.
Read articleKit Consulting: how to use Spain's digital advisory voucher — Summum Sistemas
Kit Consulting funds up to €24,000 in digital transformation consultancy for SMEs with 10 to 249 employees: here is how the voucher works, its categories, and how to get the most out of it.
Read articleSII vs Verifactu: Key Differences and What Changes in Your ERP — Summum Sistemas
Two acronyms that are constantly confused: SII and Verifactu are not the same thing, they do not affect the same companies, and they do not require the same technical changes. Here is the difference, explained precisely.
Read articlePentesting and Red Teaming: Security Testing Guide
Vulnerabilities, exploitation and reporting.
Read articleIR: incident response and digital forensics explained
Triage, analysis and chain of custody.
Read articleSOAR: Security Orchestration and Incident Response
Playbooks, automation and research.
Read articleIT Compliance: GDPR, Privacy Regulations and Controls
Audit of systems, policies and documentation.
Read articleAIOps: AI-Driven IT Operations and Automation
Anomaly detection y predictive maintenance.
Read articleEdge Computing: processing close to the user
IoT, 5G and ultra-low latency at the edge.
Read articleQuantum Computing: the future of computation
Qubits, algorithms and post-quantum cryptography.
Read articleSDN/SDx: Software-Defined Networking Explained
Infrastructure virtualisation and automation.
Read articleStorage: scalable and reliable data storage architecture
NAS, SAN, object storage and automatic tiering.
Read articleVirtualization: hypervisors and virtual machines
VMware, KVM, Hyper-V and consolidation.
Read articleHigh Availability: intelligent redundancy for resilient systems
Load balancing, clustering and heartbeat protocols.
Read articleInfrastructure as Code: IaC and automation
Terraform, Ansible, CloudFormation y versionado.
Read articleAPI security: secure development and modern integrations
REST, GraphQL, rate limiting and OAuth 2.0.
Read articleSSL/TLS: robust encryption for data in transit
Digital certificates, HTTPS and certificate pinning.
Read articleFirewall: Advanced Configuration and Security Rules
Ingress/Egress, WAF and DDoS protection.
Read articleVPN: Secure Remote Connections and Access
VPN types, protocols and secure setup.
Read articleIdentity Security: IAM and Modern Authentication
SSO, MFA, access management and authorisation.
Read articleMonitoring: Logs, Metrics and Full Observability
ELK Stack, Prometheus, alertas inteligentes.
Read articleVirtualisation and Containers: Docker and Kubernetes
Orchestration, automatic scaling and microservices.
Read articleDatabases: SQL and NoSQL in the Enterprise
Relational modelling, normalisation and scalability.
Read articleNetworks: Robust Infrastructure and Connectivity
LAN, VPN, SD-WAN and perimeter security.
Read articleBackup and Recovery: a Robust Disaster Recovery Plan
RTO, RPO, replication and automatic failover.
Read articleCybersecurity: preventing and responding to attacks
Firewalls, IDS/IPS and incident investigation.
Read articleDevOps: CI/CD and deployment automation
GitHub Actions, GitLab CI and continuous deployment.
Read articleCloud Computing: AWS, Azure, Google Cloud
Cloud infrastructure, services and strategic migration.
Read article
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