Anonymous participant They asked for three documents. The first has two option. The second option is a letter from one of your clients, which is still in line with freelance. They then want to see that you make a living from this. Some people might interpret income as being a routine weekly/biweekly/monthly paycheck. Since you freelance, you would be receiving payments irregularly. They want to see that. Other document is your tax paperwork.
Anonymous participant - so you are applying via Jakarta? They want to see your flight from Thailand to Indonesia, that flew before you applied and want to see your future ticket from Indonesia to Thailand that proves you are still in Indonesia.