Document background
The Purchase Contract Addendum is a essential legal instrument used to modify existing purchase agreements without the need to draft an entirely new contract. It is particularly relevant when parties need to adjust specific terms, prices, delivery conditions, or other elements of their original agreement while maintaining the basic framework of their relationship. Under German law, such modifications must comply with the formal requirements of the Bürgerliches Gesetzbuch (BGB) and, where applicable, the Handelsgesetzbuch (HGB) for commercial transactions. This document type is commonly used in response to changing business circumstances, market conditions, or mutual agreements between parties to modify their original terms. The addendum must clearly reference the original purchase contract and specify which provisions are being modified, added, or removed, while ensuring that all changes are legally binding and enforceable under German law.
