Legal reform or “ Reformasi Hukum” in Indonesia in the post-1998 period can be characterized as the largest legal reform undertaking in the history of Indonesia including the pre-independence Dutch colonial period up to 1945. The areas in which legal reform were undertaken included almost all areas of Indonesian law. One of the largest changes and impacts of legal reform was the series of four amendments to the 1945 Constitution between 1999 and 2002.
Source: Reforming Laws and Institutions in Indonesia: An Assessment by by Naoyuki Sakumoto and Hikmahanto Juwana (2007) (open access).
Lindsey, Timothy and Bedner, Adriaan and Butt, Simon, 'Dysfunctional Law Reform in Indonesia: Four Case Studies' (2018) 19(1) Australian Journal of Asian Law Article 5 (open access on SSRN)
Reform of Indonesian Law in the post-Soeharto Era (1998-1999) - a 2004 PhD thesis by Nadirsyah Hosen, University of Wollongong (open access)