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1. Each competent authority shall require any undertaking holding stocks in the territory of the other State to furnish it with a statistical return, at least monthly, of those stocks within six weeks of the expiry of the period to which the return relates.
2. Each statistical return to be furnished under paragraph (1) of this Article shall include particulars of:
a) the name and address of the undertaking holding the stocks in the other State and where applicable, the name and address of the undertaking established in the State where the stocks are to be held, which is to hold the stocks on its behalf;
b) the nature and quantity of the stocks; and
c) the location, if known, of the depot(s) where the stocks are held.
3. Each competent authority shall if requested by the other competent authority transmit to the latter copies of every statistical return furnished under paragraph (1) of this Article.
4. The competent authority of the State in which the stocks are held shall, by exercising from time to time its powers of inspection, check on the information contained in statistical returns so furnished and notify forthwith the competent authority of the other State of any material discrepancy in respect of that information.