Nowadays, public procurement has increased as growth in our country, also these processes are more complex than most processes in charge of public administration , as in these proceedings is not only involved the provision of quality and execution of works for the citizenship, but there is also a large public and private attention on the decisions made about that, one of the most important legal phenomena in public procurement are the challenges, which are resources that bring to alert an error of law or form, also the same phenomenon can limit the growth of state expressed in works and services to citizens about the Law on Public Procurement has been provided to establish a guarantee as a condition of eligibility to appeal challenge , to be described the appeal request of the bidder , however require a guarantee as access to administrative justice could limit access to administrative ju...