Start with two Spanish workstreams, not one slogan
Spain readiness conversations often mix the B2B e-invoicing mandate under Ley Crea y Crece with the anti-fraud billing-system rules known as VeriFactu or SIF. They are related because both affect invoice software, but they answer different questions: how invoices are exchanged with business customers, and how billing records are created, secured and traceable for tax purposes. Treat them as parallel checks in your software selection file.