1. submitting online – using the personal digital certificate, or through an authorized person (lawyer) the documentation is presented on MERCURIO and / or REDSARA platforms, (preferably MERCURIO). The documentation should be sent to the ‘Oficina de extranjeros de Barcelona.’ (Foreign affairs Office of Barcelona.)
- MERCURIO- https://sede.administracionespublicas.gob.es/pagina/index/directorio/renovacion_telematica_extranjeria
- REDSARA- https://rec.redsara.es/registro/action/are/acceso.do
The authorizations for modification of student card to residency card through the work permit (4.3.2) or to own account (4.3.3) are presented in person to the ‘la oficina de Treball de la Generalitat’ (The Employment Office). You have to request an appointment at the following link: http://treball.gencat.cat/es/ambits/estrangeria/inici_tramitacio/com_presentar_sollicitud/ci/cita_previa_empreses/