Regarding Acceptance Certificate (AC), In our hand already has your signed AC of 19 pp. (BPT-BN: 11 pp. and OPY-Wangnoi: 8 pp.) on 26-Aug-2016. Is “PGL (OPT) 19 pp on 26-Aug-2016” that you sent us it same as the above AC? We afraid that AC overlapped.