create-multi-line-invoice

This skill should be used when the task asks to create an invoice with MULTIPLE product lines, especially with different VAT rates (25%, 15%, 0%). Trigger phrases include "mit drei Produktzeilen", "with three product lines", "med tre produktlinjer", "avec trois lignes de produit", "con tres líneas de producto", "Rechnung mit Produktzeilen", or any invoice mentioning multiple products with different VAT/MwSt/MVA rates.