Allow to export book of issued and received Invoices
The Spanish tax authority requires to be able to have a book of issued and received invoices:
https://www.agenciatributaria.es/AEAT.internet/en_gb/Inicio/_Segmentos_/Empresas_y_profesionales/Empresas/IVA/Obligaciones_contables_y_registrales_en_el_IVA/Libro_registro_de_facturas_expedidas_.shtml
https://www.agenciatributaria.es/AEAT.internet/en_gb/Inicio/_Segmentos_/Empresas_y_profesionales/Empresas/IVA/Obligaciones_contables_y_registrales_en_el_IVA/Libro_registro_de_facturas_recibidas_.shtml
Thanks to #8695 (closed) this can easly achieved as a CSV Export.