Later, in 1994, there has been a correction and Ouro Preto Protocol Declaration by which the Customs Union set to begin the system used since January 1 2538 (, 1995).
Later in 1994 has been revised and updated by the Declaration of Ouro Preto Protocol, which is scheduled to begin implement the customs union used. Beginning on January 1, 2538 (1995) onwards.
And it came to pass, when the year 2001 1994 has revised and updated by the Ouro Preto Protocol which set to activate the customs union to use, since the day 1 January 2538 (AD 1995). Onwards.