Link Between Tables

Hi my friends,

I am looking for a link between

V_EQUI and KNA1-KTOKD

V_EQUI and KNA1-KNA1

V_EQUI and ADRC-REGION

V_EQUI and ITONB-INBDT

V_EQUI and MARA-PRDHA

I am usually very good at finding relations, but for some reason today I can not think!

Reward for all helpful answer 😊