SII — Immediate Supply
SII fully integrated into your ERP: frictionless tax control
Automate the immediate supply of information to the AEAT, reduce errors, and gain real-time visibility into your tax compliance. Request a free, personalised DEMO and assess the impact on your processes.
THE CHALLENGE
Real-time reporting to the AEAT is mandatory from €6 million
From €6 million, the Immediate Supply of Information (SII) becomes a tax obligation. At Revertis, we have managed to turn the situation around and make the system support day-to-day invoicing tasks, rather than complicate them.
Common situations:
- Increase in the number of invoices and daily transactions
- Need to report tax data within very tight deadlines
- Reliance on manual or semi-automated processes
- Partial integrations between ERP and tax systems
- Overloaded IT and finance teams
This creates a significant operational burden:
- Risk of regulatory non-compliance
- Errors in tax submissions with sanctioning consequences
- Lack of traceability on the status of each transaction
- Overload during monthly and quarterly closes
- Dependence on limited internal resources
Root cause of the problem
The problem is not only regulatory, but structural. In many organisations:
- The ERP is not prepared to communicate with the AEAT in real time
- Existing integrations are rigid or not very scalable
- There is no end-to-end traceability of the tax process
- Technical maintenance falls on limited internal resources
As a result, errors, rework, and the risk of non-compliance increase.
THE SOLUTION
Full SII integration with your ERP, without altering core processes
Revertis offers a full SII integration solution with your ERP, designed to automate the submission of tax information without altering your core processes.
We dare say the system reduces the administrative team’s workload rather than increasing it.
ERP–AEAT integration
We integrate your ERP directly with the AEAT.
Automatic generation
Automation in the generation and validation of SII records.
Real-time submission
Management of real-time or deferred submission as needed.
Control and monitoring
Control and monitoring of the status of each transaction.
Pre-validation
Validation engine that reduces incidents before submission.
Adaptable to your ERP
Compatible from Dynamics 3.0 to D365 Finance, among others.
OBJECTIVE
A technical, scalable approach aligned with complex corporate environments.
Transformation
From manual processes to an automated, traceable tax workflow
Before
Manual processes or reliance on multiple systems
Errors in tax data validation
Lack of visibility into submissions and statuses
Overload on internal teams
After
Automated workflow directly from the ERP
Pre-validation that reduces incidents
Centralised real-time monitoring
Reduced operational workload and greater control
Guaranteed regulatory compliance
WHAT IT INCLUDES
Comprehensive coverage of the SII process
ERP–AEAT integration
- Direct connectivity with the AEAT
- Compatible from Dynamics 3.0 to D365 Finance
- Native integration with no intermediary systems
Data validation
- Tax validation engine
- Early detection of incidents
- Reduction of errors before submission
Submission and status management
- Automatic generation of SII records
- Real-time or deferred submission
- Management of responses and statuses from the ERP
Monitoring and reporting
- Reporting integrated into the ERP
- Full traceability per transaction
- Real-time visibility
Ongoing regulatory compliance
- Adaptation to regulatory changes
- Specialised technical support
- Support during audits
Does your organisation exceed €6 million in turnover?
SII is already mandatory for you. Request a free, personalised DEMO and assess how to integrate tax reporting without overloading your team.
METHODOLOGY
How we implement integration with the AEAT
01
Tax environment analysis
Assessment of the current ERP, processes, and regulatory requirements
02
Technical configuration
Parameterisation of the validation engine and tax rules
03
Integration with the AEAT
Direct connectivity, certificates, and authentication
04
Validation with real data
Testing in the operational environment and fine-tuning
05
Go-live
Activation, monitoring, and user training
RESULTS
Tangible results: up to 80% fewer tax errors
Measurable business impact:
- Reduction of errors in tax submissions: up to 80%
- Reduction in operational time: 30–50%
- Improved regulatory compliance and reduced risk
- Greater efficiency for IT and finance teams
- Full real-time visibility into tax status
Direct impact on:
- Regulatory compliance
- Operational efficiency
- Reduced risk of penalties
ONGOING SUPPORT
The value does not end with implementation
Regulatory updates
Continuous adaptation to regulatory changes
Specialised support
Technical support in critical environments
Functional evolution
Evolution according to customer needs
Audit support
Support during tax reviews
ABOUT REVERTIS
Specialists in systems integration and automation in Microsoft environments
+20 years
of experience as a Microsoft Partner
Technical approach
Focused on complex environments
Integration with Microsoft ERP
Deep expertise across all versions
Adaptation to each customer
Capability for specific requirements
Efficiency and control
Focus on operational results
