Limited Stay Permit (ITAS) is a permit granted to foreigners to stay and be in Indonesian territory for a limited period. ITAS is a multiple-entry permit where foreigners can leave and re-enter Indonesia as long as the validity period of their residence permit is still active.
Visit Stay Permit (ITK) is a permit granted to foreigners to stay and be in Indonesian territory for a short period of time for the purpose of visit. ITK is single-entry, so foreigners can only enter Indonesian territory once and if they want to re-enter, they must apply for a new visa.