What I want to do is to obtain index constituents that can not be acquired by TR.IndexConstituentRic. For example, for constituents of .FOOD17.T, I tried to acquire from LONGLINK. The code I wrote is as follows.

ek.get_data('0#.FOOD17.T',['LONGLINK{}'.format(i) for i in range(1,15)])[0]
ek.get_data('1#.FOOD17.T',['LONGLINK{}'.format(i) for i in range(1,15)])[0]

I successfully acquired LONGLINK after 1#, but can not acquire 0# LONGLINK.

The returned data's column is RF.SD.LONGLINK, not LONGLINK and data is Nan.

How can I get 0#' LONGLINK correctly