Hello Aspirant,

The EWS certificate is required only when you apply for a teaching or research post. During the appointment , they will verify the documents and that is when you will need your EWS certificate. The validity of the EWS certificate is decided by the designated authority of the states and in general the validity is till one year from the date of issue. So having written the exam as an EWS candidate , if you have a valid EWS certificate based on the current income and asset details , then you have no reason to worry.

https://competition.careers360.com/articles/ugc-net-ews-certificate

All the best