linguistic:translation
Official policy

As regulated by Indonesian state law UU No 24/2009, other than state official speeches and documents between or issued to Indonesian government, Indonesian language is required by law to be used in:

However, other languages may be used in dual-language setting to accompany but not to replace Indonesian language in: agreements, information regarding goods / services, scientific papers, information through mass media, geographical names, public signs, road signs, public facilities, banners, and other information of public services in public area.

While there are no sanctions of the uses of other languages, in Indonesian court's point of view, any agreements made in Indonesia but not drafted in Indonesian language, is null and void. In any different interpretations in dual-language agreements setting, Indonesian language shall prevail.