Hello Nikita Singh,

The EWS Certificate is valid all over India. The signing authorities are as follows:

• DISTRICT MAGISTRATE
• ADDITIONAL DISTRICT MAGISTRATE
• COLLECTOR
• DEPUTY COMMISSIONER
• ASSISTANT DEPUTY COMMISSIONER
• MAGISTRATE
• SUB-DIVISIONAL MAGISTRATE
• TALUKA MAGISTRATE
• EXTRA ASSISTANT COMMISSIONER

Appropriately your certificate must be valid.

HOPE THIS HELPS