The film implies that when one guerrilla fighter (a man) was wounded, he refused to leave the embassy and died there. In real life, that guerrilla fighter was a woman.
The film suggests that the name of "La Chiqui" was Carmenza Londoño. Her real name was actually Natalia Arias Mendoza.
Footage was used in the movie (black and white), which shows the facade of the embassy, but the house used does not match the real embassy.
The hostages are sent a box of food, but some of the products did not exist in 1980 (i.e. Chitos were not available in Colombia until 1985).
One scene momentarily shows a package tied with ribbon and a wire, revealing the explosive device that explodes some shots later.
An important point of measurement was the proximity of the embassy with La Universidad Nacional de Colombia (National University of Colombia), but in the film no university is nearby.