Article 178
In order to exercise the right of deduction, a taxable person must meet the following conditions: (a) for the purposes of deductions pursuant to Article 168(a), in respect of the supply of goods or services, he must hold an invoice drawn up in accordance with Articles 220 to 236 and Articles 238, 239 and 240; (b) for the purposes of deductions pursuant to Article 168(b), in respect of transactions treated as the supply of goods or services, he must comply with the formalities as laid down by each Member State; (c) for the purposes of deductions pursuant to Article 168(c), in respect of the intra-Community acquisition of goods, he must set out in the VAT return provided for in Article 250 all the information needed for the amount of the VAT due on his intra-Community acquisitions of goods to be calculated and he must hold an invoice drawn up in accordance with Articles 220 to 236; (d) for the purposes of deductions pursuant to Article 168(d), in respect of transactions treated as intra-Community acquisitions of goods, he must complete the formalities as laid down by each Member State; (e) for the purposes of deductions pursuant to Article 168(e), in respect of the importation of goods, he must hold an import document specifying him as consignee or importer, and stating the amount of VAT due or enabling that amount to be calculated; (f) when required to pay VAT as a customer where Articles 194 to 197 or Article 199 apply, he must comply with the formalities as laid down by each Member State.