VBAP-LGORT gets input help from what options among these two?

Hi,

In perspective of input help of VBAP-LGORT field , it has 1st) from a check table-T001L under 'Check table' tab and 2ndly) from Search Help as H_T001L under 'Search Help' tab. I am confusing that whether VBAP-LGORT is getting input help from the check table or Serach help? how it works pls. let me know

Thank you