Where are you coming from.. Amsterdam. Some will put another transit country but that's not really where you are coming from because you're coming from Amsterdam. Either way though it's usually accepted to put the transit country even if you never entered it.
the mystery is why people who speak English are unable to figure out what "arrival" means. They ask do they have to fill in an arrival card if arriving in thailand. Or those who want to extend their stay and say they want to renew a visa.