League of Legends announced in their upcoming 15 May Patch 9.10, the Indonesia server will be merged into the Singapore and Malaysia server to “…allow players across all three countries to find matches faster, with better matchmaking and increase the competitiveness of the server”.
Indonesian players can start transferring their account to the Singapore and Malaysia server through the transfer website.
As part of this server merger process, players from the 3 regions will get double XP over the next 2 weekends (Fridays to Sundays from 17 April to 28 April).
Cover image from League of Legends Garena website.