In certain imports, customs clearance does not depend solely on the customs declaration. Many products are subject to prior technical controls carried out by SOIVRE, which operates under the Ministry of Economy, Trade and Business.
When the goods arrive without meeting the required technical requirements — marking, certification or documentation — the usual outcome is goods being held, a SOIVRE inspection, or the impossibility of customs clearance.
These controls especially affect industrial products, electronics, toys, textiles and consumer goods subject to European technical regulations and CE marking.
Correctly anticipating the requirements of SOIVRE control for imports before the goods arrive is, in many cases, the only way to avoid costly border holds.

The Official Service for Inspection, Surveillance and Regulation of Exports (SOIVRE) is the body responsible for verifying that certain products comply with the applicable technical regulations before entering the European Union market.
In practice, SOIVRE control at customs verifies that imported products comply with European safety requirements and technical regulations.
Its controls focus mainly on:
The legal basis is found in Royal Decree 330/2008
In practice, this means that certain goods cannot be cleared unless they first pass the relevant SOIVRE technical control.
Among the products most frequently affected by SOIVRE import inspections are:
In these cases, control is not limited to reviewing the customs declaration. The inspector may require technical documentation proving compliance with the applicable European regulations.
During a SOIVRE inspection at customs, the body may verify different technical aspects of the product.
The inspector may check that the imported goods actually match the technical documentation submitted.

When the inspector detects irregularities during the SOIVRE technical control, customs clearance may be brought to a halt.
The most common situations are:
Goods retention. The goods remain at the port or airport until the issue is resolved.
Request for additional documentation. The importer must provide the certificates or technical documentation that were not initially submitted.
Physical inspection of the product. SOIVRE may request that packages be opened or that the goods be directly verified.
Impossibility of clearance. In serious cases, the goods may not be authorised for marketing in the European Union market.

In practice, many issues in SOIVRE import controls are not due to fraud, but rather to a lack of technical preparation before the goods are shipped.
The most common mistakes are:
When these problems are detected at the border, the solution usually involves logistical delays, storage costs and additional technical procedures.
SOIVRE controls at customs are part of the European market’s technical surveillance system and affect a wide range of imported products.
Unlike other customs procedures, these controls are not resolved solely with commercial documentation or correct tariff classification. They require the product to genuinely comply with the applicable technical regulations.
For this reason, the most costly incidents do not occur during customs clearance itself, but when the goods reach the border without their technical and conformity requirements having been checked in advance.
For imports of industrial or consumer goods, anticipating SOIVRE control requirements before the goods are shipped is often decisive in avoiding holds, inspections or delays in customs clearance.
