The Salomón–Lozano Treaty was signed in July 1922 by representatives of Colombia and Peru. The fourth in a succession of treaties on the Colombian-Peruvian dispute over land in the upper Amazon region, it was intended to be a comprehensive settlement of the long-standing border dispute between the two countries.[1] The result of a Peruvian attack on the river town of Puerto Córdoba, the treaty forced both countries to scale back the number of troops in the region. It essentially created a border between both nations along the Putumayo River, and Colombia recognized Peruvian territorial claims to the Amazon east of Ecuador.