hi,

see there is no correction window available for ssc gd constable application form in staff selection commission portal. so I would suggest you to contact with the ssc regional offices. you need to call and give them your registration number and other details describing your problem. see this not be an issue for attempting the exam, but during document verification you may asked why did you give wrong input in 10th roll number. so better to connect with them.

you may follow the below link to know about the ssc regional offices contact numbers.

https://ssc.nic.in/Portal/AdmitCard