Manual adjustments to invoices are mainly due to Thailand Securities Depository (TSD) portfolio charge amendments. NCS computes the TSD charges based on the prevailing month-end portfolio valuation, which is not line with TSD requirements of aggregate fees based on daily portfolio valuation. The computation of the aggregate daily TSD fees is performed via Macros-enabled Excel spreadsheet. Thus, the TSD charges generated by NCS have to be adjusted and the correct aggregate daily fees manually applied in the re-generated invoice in NCS. The revised invoice amount will also be manually adjusted on the hardcopy monthly Invoice Generation Report.