1. For purposes of exercising the right of deduction, the Taxable Person must hold the following documents:
a) the Tax Invoice received pursuant to the provisions of this Agreement;
b) the customs documents proving that he imported the Goods in accordance with the Common Customs Law.
2. Each Member State may allow the Taxable Person to exercise the right of deduction in the event that a Tax Invoice is not available or does not meet the requirements provided for in this Agreement, provided that the value of Tax due can be established by any other means.