Hello,
College of Engineering Trivandrum accepts KEAM for admission. If you satisfy the eligibility criteria of the entrance exam then you can register for the exam for sure.
About the non-creamy layer and ST, it is for reservation which will give you a categorical rank and make you open for more college options.
If you don't have documents then it will be a problem. You should make certificate which will prove the details given in the application form.
For ST , there is 2% reservation in KEAM reservation system. You can use it for admission.
For more information:- http://www.cee-kerala.org/docs/keam2019/pros/part1_impinfo_clauses.pdf
Hope it helps!
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