2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221886The paper presents a description of some point of view of different authors related to the failures and exceptions that appear in workflows, as a direct consequence of unavailability of resources involved in the workflow. Each of these interpretations is typical for a certain situation, depending on the authors' interpretation of failures and exceptions in workflows modeling real dynamical systems.12 pages, exposed on 2nd "European Conference on Computer science and Applications" - XA2008, Timisoara, RomaniaSoftware Engineeringtext