Hi there,
Several US companies reported that their network equipments have been stuck in customs in some EU countries because they could not provide an EORI number.
An EORI number is a customs ID in the EU for importers and exporters. In most EU nations, it is enough to have this customs ID in order to be able to act as importer of record (IOR). However, some countries like Spain or Belgium require that a foreign company should be also registered for VAT purposes locally in order to import in the country.
To read more about applying for an EORI number in the EU, this page can be useful:
https://www.corintax.com/get-an-eori-number.html
Kind regards -