Dual Passport Indonesia

That's a bit confusing. Does it mean that basically you are Indonesian and over 21 years of age, and have just gotten your first Australian passport but want to retain your Indonesian citizenship and passport but that it's not allowed it's not allowed? And that you are looking at the best way to enter and leave Indonesia without the Indonesian authorities finding out about your dual nationality?

I grew up between Australia and Indonesia and recently has just obtained my Australian Passport. I would like to retain my citizenship in both countries as I grew up in both countries and considered both country as my home.     -@janewong98

It's illegal under Indonesian law to hold two or more passports.

There are no valid questions to ask as you are asking how to commit a crime.

Additionally, would you apply your overseas passport under a different name?
    -@janewong98

I saw a thread on another forum that was very similar to this one.

The OP had applied for their second passport using false information. Clearly an illegal act as they deliberately missed out their middle name in an attempt to get around a law.

I have no idea what the punishment is for doing that in Australia, but it's illegal.

Bit obvious.

Finally

Passport agencies all over the world share information - Your chances of getting into trouble are far too high.

You may have broken the law in two countries and risk losing citizenship in at least one, I have no idea what you should do.

For future readers of this thread who may be tempted to do the same

DON'T BE STUPID

One point just popped into my head.

On a visit to immigration some years ago, I saw this forum on a senior officer's computer.

One has to hope the OP hasn't used her real name as a forum username.

It might well be time to get worried.

This is only a guess, but it's probably a very bad idea to commit a crime, then admit you know it's illegal.

Then, just to really prove your education was a waste of money, possibly use your real name to advertise it on the internet ... oh, and add your birth year just to make it very easy for immigration to find you.