ISL U-21
See also: Indonesia Super League U-21Building and managing a complete U-21 team is one of the requirements for clubs participating in the ISL. Those U-21 teams will participate in the Indonesia Super League U-21 which is held in parallel with the main competition. In 2009-10, Persib Bandung U-21 team won the league, then Persela U-21 won the title two years in a row (2011 & 2012).
Prior to 2008, the highest level of junior level competitions in Indonesia was U-23 League Cup.
Read more about this topic: Indonesia Super League