The secretariat, based in Vanuatu's capital Port Vila, has experienced funding limitations in recent years.
The five full members - Papua New Guinea, Vanuatu, Fiji, Solomon Islands and New Caledonia's FLNKS Kanaks Movement - are meant to pay annual contributions.
However, some members have struggled to pay their dues on time in the past few years.
According to a spokesman for Indonesia's embassy in Australia, Sade Bimantara, Jakarta has been helping the MSG out.
