The Indonesian football league system is a series of league system for association football clubs in Indonesia. Since 1994, Liga Indonesia is the league competition featuring association football clubs, as a result of two existing top flight football leagues merger: Perserikatan (amateur) and Galatama (semi professional). Liga Indonesia is managed by PSSI, the Indonesian national football federation.
There are 5 levels of competition in the hierarchy. The top three in the hierarchy are professional and semi-professional competitions, whereas the rest are amateur.
In 1979/80, a semi-professional league was founded, namely Galatama (English: The Premier League), which was consisted of only one level of competition (except 1983 and 1990 in which it involved 2 divisions). Therefore, since 1979, both Galatama and Perserikatan were existed and had their own league systems.
Source : http://en.wikipedia.org
