To ensure consistent and transparent commercial fisheries data, there is a need to develop the Regional DataBase and Estimation System (RDBES), which support regional sampling and statistical sound estimations. It is fundamental that national data submitters understand the RDBES data model/format, so they can upload national commercial fisheries and incidental bycatch data into the RDBES. At the WKRDBES-INTRO the data model/format of the commercial fisheries RDBES was described and explained to national data submitters in a 3-days long online workshop. The 55 participants agreed that it was a very good and informative workshop, where they after the participation understood the data model. In the second half of the workshop the participants from the different countries could book a support session. Where typically several participants from the same country could ask specific national questions. Such questions could of course be asked at any time during the workshop. But the support sessions gave an obvious opportunity to describe the national situation and ask more detailed national specific questions. There was a consensus from the participants that the format of the 3-days online workshop was very good and the workshop should continue in the format it has.