In Reply to: be careful posted by coopers on Friday, 30. March 2007 at 19:44 Bali Time:
I agree with the previous posters. My wife is Indonesian and has both an Indonesian passport and a KTP.
An Indonesian must have a KTP to purchase real estate, to identify themselves to Police and even to stay in a hotel.
To obtain a replacement KTP, an Indonesian has to return to the Kelurahan where they are registered, produce a photograph and sufficient paperwork to prove his identity (shades of Australia's proposed Access Card).