The Asian Development Bank is currently reviewing different options concerning the
technical aspects related to the ACU calculation, including the nature of the basket, the choice
of fixed weights vs. fixed units, the selection of currencies to be included in the basket, the
choice of weights, the criteria for their periodical revision, and other aspects as well. The Asian
Development Bank was to announce the details of the ACU in March 2006 or later. However
external pressures delayed this announcement although the concept was still being studied in
detail. A panel discussion in February 2007 cited technical and political obstacles as having
prevented the project from advancing. The unit, limited to ASEAN+3, was said to be still moving
forward by mid-July 2007.