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Practical Handbook for Companies 2021

Identification of persons and entities

The Companies WEB help service does not accept the filing of returns with persons or entities incorrectly identified (NIF of partners, administrators, investee entities, etc.).

For this reason, it is recommended that you first use the identification help service which is available on the Internet portal of the AEAT, where you can consult the identification both individually and en masse.

In those cases in which can be used to fill in identification data from third countries (by means of a country field or similar marking to that effect), validation against the AEAT census will not be carried out.