However, due to the limited knowledge of the region, ambiguous terms such as "divortium aquarum" or "nascent river X" were used, discrepancies reappeared and in 1948, when only 78 kilometers were missing by demarcation, Ecuador suspended the placement of the landmarks and declared the Protocol unenforceable and void in 1960.

After a year and a half of intense talks, and after a pronouncement of international experts on the border line, the two countries, with the approval of their respective Congresses, agree to submit their differences to the decision of the guarantors of the 1942 Rio Protocol.

The treaty was signed at Itamaraty Palace on October 26, 1998, with the signatories being as follows:[3] The peace agreement was followed by the formal demarcation of the border on 13 May 1999 and the end of the multi-national Military Observer Mission for Ecuador and Peru (MOMEP) troop deployment on 17 June 1999.

One part of this plan was to establish a Peace Park (Spanish: Parque de la Paz), which would include a monument dedicated to the fallen during the conflict, and a road system to connect the area with the rest of the country.

[11] As per the treaty, Ecuador would also be granted two 150 ha territories in the Peruvian towns of Pijuayal and Saramiriza for 50 years,[12] where Trade and Navigation Centers (Spanish: Centros de Comercio y Navegación, CECONA) would be established in order to provide the country an outlet to the Amazon River.