First of all, you have to understand the Indonesian culture and people. It will be very helpful if you understand  or speak some of the language as it would be a useful tool in any business dealings. Never go into the market cold turkey and get a feel of the market before doing anything. If you have doubts, put your plans on hold. It is always better to take a step back instead of pushing forward blindly, after all it is a foreign country you are embarking your business into. So better be sure.

If you know someone who is helping you in the setting up of the business who is a local, always take good care of them. Always ensure that they are happy to help you and do not be bossy as it would be very counter-productive. Wherever possible, always go direct into the processes. This include applying for registration and particularly dealing with government agencies. Nothing happens overnight, so you must give some time for the application to process. Approvals and such would need time and in Indonesia, there would be some bureaucracy involved so be prepared to wait a while. Pushing for immediate answers will not help.