There are no such information available on the official brochure regarding the issuing of EWS. If you have provided correct information and if it is issued by the State Government of Maharastra, its completely acceptable by the UPSC. Although if you want, you can contact the helpdesk of UPSC for the SC/ST/OBC/PwD/EWS related issues by visiting the link below-

https://www.upsc.gov.in/helpline/press-note-helpline

or you can directly to the number as available on the website- 1800-118-711

For more information regarding UPSC preparation tips consider the link below:

https://competition.careers360.com/articles/how-prepare-for-upsc-ias

I hope this helps. Wish you a great eve!