Sentence:  <WSD>Acquis</WSD> is a French term meaning "that which has been agreed". In the context of the Tripartite Free Trade Agreement (TFTA) means that the negotiations should start from the point at which ... the COMESA, EAC and SADC trade negotiations have reached. Tariff negotiations and the exchange of tariff concessions would be among Member/Partner States of the Tripartite FTA that have no preferential arrangements in place between them. This will both preserve the <WSD>acquis</WSD> and build on it. 
Meaning of the word marked with <WSD> tags:  The accumulated legislation and decisions of any international community.