Greetings!!

Yes, a caste certificate can be easily renewed , since you have your original caste certificate made in the year 2018 and after one year generally the caste certificate expires, thus you need to renew it , thus you can do the following in order to renew your caste certificate:

• You can apply for a new certificate at the nearest stamp vendor at district office or Tehsil court where you will be required to submit your original caste certificate (old ) , passport size photograph, electricity bill, aadhar card or any other identity proof .
• A few other documents such as your parents Caste certificate will also be required.