As per conversation by telephone about to invoice TH 16036 reference payment is 100% upon delivery of service and invoice TH16055 reference payment is 50% of Total to be paid within 30 days after confirm PO.
Because off payment pending, I-MAS have to postpone schedule upgrade which kick off on 4 July 2016 . After paid I will send new schedule to you ka.
Thank you very much for your kindness.