Hi and thanks for your contributions to improve public transport stations in Barcelona.

I came across your changes on both Plaça de Sants and Plaça Espanya where you created some very large stop area relations for all of the public transport (PT) infrastructure on that location. If the PT infrastructure is a separate location (like metro stations, bus stations) it is preferable to create separate stop areas which are then linked via a stop_area_group relation that contains all of them. You can see an example here for Espanya which contains the metro, GCG and bus stop areas: https://www.openstreetmap.org/relation/5720834

Could you follow this established tagging scheme, please? Here's the related documentation: https://wiki.openstreetmap.org/wiki/Relation:public_transport

Let me know if you have any questions.