Some models of Class A TAWS used in regional aircraft do not hold the entire world database of terrain.
The Honeywell MK VI EGPWS, for example, can hold one of three different databases - Americas, Atlantic, and Pacific. These correspond approximately to the Americas (north and south), Europe & Africa including the middle east, and Asia beginning at about India and going east from there.
If this aircraft was normally based in Russia, and if it used a TAWS that only held 'regional' databases, it would have had the 'Atlantic' database loaded into it at home. That terrain database does not include coverage for Indonesia.
If an aircraft equipped with a TAWS that contains regional (rather than worldwide) terrain coverage flies out of the area that the database covers, a TERR FAULT (as opposed to TAWS fault) message will be presented. This means that the 'enhanced', or look-ahead, functions of the TAWS are no longer available due to no geographical data being available... only the 'classic' GPWS modes will function.
The Sukhoi is a regional jet, it would not make economic sense to equip it with a TAWS database that contains the whole world. But - I am familiar only with the Honeywell EGPWS (TAWS) systems, not with those manufactured by other companies.