Article 28
Preservation of proofs of origin and supporting documents 1. The exporter applying for the issue of an EUR.1 movement certificate shall keep, for at least three years, the documents referred to in Article 17(3). 2. The exporter making out an invoice declaration shall keep, for at least three years, a copy of that invoice declaration as well as the documents referred to in Article 21(3). 3. The customs authorities of the exporting country issuing an EUR.1 movement certificate shall keep, for at least three years, the application form referred to in Article 17(2). 4. The customs authorities of the importing country shall keep for at least three years the EUR.1 movement certificates and the invoice declarations submitted to them.