In B2B relationships, the applicable legal references are: Italian Civil Code, Articles 1321 et seq. (contracts); Articles 1470 et seq. of the Civil Code (sale); Articles 1490 et seq. of the Civil Code (warranty for defects); Article 1495 of the Civil Code (terms for reporting defects); Legislative Decree 231/2002 and Directive 2011/7/EU (late payments)