That list is for application for extension based on retirement.
In any event some made up list by one crack pot immigration office does not mean a lot.
There are ~ 75 offices.
The "residence certificate " on the list is straight out crazy.
Post the first four points (requirements) and list heading.
Might be good for a laugh to see how ridiculous Trat immigration is.
#9 Looks like list for extension based on marriage.