BADU aims to professionalise youth workers and youth educators and validate their competences in supporting youth mobility and non-formal learning. This is achieved through the creation of Open Badges. This Erasmus+ funded project fosters the use of Open Badges for validating youth workers’ competences in the areas of youth mobility and non-formal learning. There is a practical guidebook on the use of the Badu Open Badge system and a good practice catalogue. Interesting for youth organisations that are interested in the use of Open Badges to validate competences or achievements. Youth workers and volunteers who work in the youth sector can use Open Badges to validate social competences, which are usually not certified by formal or higher education.