1B1 [Basic rules of applicability: parties in different Contracting States];|4A ; 4B ; 4B11 [Scope of Convention: issues covered; Issues excluded; Remedies for fraud];|8C [Intent: interpretation in light of surrounding circumstances];|11A1 [Formal requirements: writing or other formality for conclusion of contract, inapplicability of domestic law];|12A [Declaration by State preserving domestic formal requirements: effect of reservation under Article 96 rejecting Article 11];|29A [Modification or termination of contract by agreement: parties by agreement may modify or terminate the contract