Do I need to provide departure flight details on the TDAC for my visa application in Thailand?

The TDAC form requests flight and departure details; however, some users report that departure information is not consistently required or mandatory. It's emphasized that filling out the departure section could make it mandatory, and many have gone through the process without needing to present a departure flight. Some users suggest that putting in a non-purchased flight detail is a common practice, while others advise to simply leave that section untouched unless specifically required.