The paper presents the methodological and technological challenges in the creation of the multilingual, corpus-based lexicographic resource CombiDigiLex (https://combidigilex.wixsite.com/deutsch), with three main aims. First, the application-oriented research context and grounds for the development of the multilingual lexico-grammatical information system CombiDigiLex, which is intended to provide information for the languages German, Spanish and Portuguese, for its use in the L2 production and translation process, are presented. Furthermore, the most relevant features of the mentioned resource in its current version (v.1.0.6) are presented. Finally, the methodological and technical difficulties of data gathering as well as lexicographic data displaying, that not only had to be overcome during the official project period, but which even at the time of writing this paper are still partly open fronts, are outlined.