This paper presents the birth of the institutional repository of open science of the Autonomous University of Carmen called Runacar in February 2020 and its evolution to date. In this sense, throughout the implementation of the institutional repository in the University they have encountered a diversity of problems at the time of the population of the repository, on the one hand, by the integration of the resources of academic, scientific, technological and innovation information generated in the University, and on the other hand, the resources that integrate the professors-researchers of the University. Therefore, the methodology used and the recommendations for the continuous population of the institutional repository are evidenced, as well as to keep the appropriate metadata record for interoperability with the national repository and with the Mexican network of institutional repositories.