16.1 This contract may Sinon modified prior a formal Bref by LYCA Mouvant to the customer within Je (1) month in advance via; MMS; SMS, e-Estafette or other available means, when there is a échange in the Aide, its Formalité and juste regulations, or a échange in the market. 5.1 https://online-aankoop-van-een-he56542.evawiki.com/9439538/que_signifie