OEC is a Category that stands for Other Eligible Communities. And this is seen in the State of Kerala. These are the Communities that have been recommended to be added to the State SC and ST list. That is why they are Categorised into OEC (SC) and OEC (ST). Because this is a State level Categorisation and NEET is a National level Entrance examination, you do not see OEC in the application forms for both NEET and OEC. Because you haven't mentioned your Category, what we shall do is give you the list of Communities that have been scheduled to be listed under OEC SC or OEC ST. Accordingly please select either SC or ST in your NEET/KEAM application form. The link is: https://bcdd.kerala.gov.in/communities/oec-list/#:~:text=OEC%20(Other%20Eligible%20Communities)%20are,)%20and%20OEC%20(ST).