The law in respect of removal of cultural property from Indonesia is pretty clear.
In very simple terms it is not a legal act to remove cultural property from Indonesia if the law states that you may not.
Two pieces of relatively recent law are worth noting:-
Law No. 11/2010
https://ihl-databases.icrc.org/appli...0%5BEng%5D.pdf
and
Law No. 5/2017
this law deals with the advancement of culture and as far as I know it is presently bogged down in bureaucratic inactivity.
Other laws that prohibit removal of cultural property from Indonesia go back to before WWII, and my understanding is that they are still enforceable.
Anybody who has the old "Ensiklopedi Budaya Nasional" can turn to the end of the book and find several pages that will make the legal position quite clear in respect of exporting keris & other cultural property from Indonesia.
This text is all in Bahasa Indonesia, but it is very clear that the author of Ensiklopedi wanted everybody to understand that it is not a real good idea to remove keris & and other cultural property from Indonesia.
Every time you exit Indonesia with keris, or anything else in your suitcases that could be deemed to be culturally important, you do run a risk. However, like all risk this risk of taking keris out of Indonesia is able to be analysed, evaluated, ranked & managed.
But we cannot carry out any risk analysis unless we know exactly what the risk entails. Until we thoroughly understand any risk, we cannot manage that risk.
Its all very well for us to recount our individual experiences and come to the conclusion that overall, taking keris & other property out of Indonesian has a very low level of risk. But that level of risk will vary for somebody who is experienced and somebody who has no experience at all.
The risk will also vary according to the nature of the individual people one needs to deal with, and the overall situation as it applies at any particular time. This element of risk is one that we really cannot protect with any control. It is unknown until such time as the event occurs.
Nobody should walk into this situation of committing an act that has the possibility of landing them in a difficult position without having an understanding of the law and its implications.
My own opinion is that it is far better to solve a problem before it arises than to try to fix things when you're in the middle of a disaster.
At least get an understanding of all the elements involved before you do anything that could result in an undesirable outcome. Try to move around problems rather than meet them head on.