EU: Council of the European Union: Report and Guide (p24): Report on the exercise of the rights of the data subject in the SIS and Guide for exercising the right of access in the SIS

Información sobre el ejercicio de los derechos en España (pg. 102-104) (documento en inglés)

The Spanish DPA offers through its website an unofficial standard form (in spanish) for the right of access that can be used at the convenience of the data subject. The form can be found on the following link:

http://www.agpd.es/portalwebAGPD/CanalDelCiudadano/denunciasciudadano/derecho_schengen_den/common/DERECHO_DE_ACCESO_Schengen_Es.pdf.
Data subjects wishing to lodge a claim related to the right of access with the Spanish Data Protection Authority can use the following link (in Spanish only): https://sedeagpd.gob.es/sede-electronica-web/vistas/formReclamacionDerechos/tipoSolicitud/solicitudPresencial.jsf