Written Form Requirement Clause Klausel zur Schriftformanforderung Written Form Requirement Clause Cláusula de Requisito de Forma Escrita Cláusula de Requisito de Forma Escrita Clause de l'exigence de forme écrite סעיף דרישת צורת כתב लिखित रूप आवश्यकता शर्त 書面形式要件条項 Cláusula de Requisito de Forma Escrita 书面形式要求条款 A Written Form Requirement Clause is a clause in a contract that specifies that any modifications or waivers to the contract must be in writing to be valid.