HELP NEEDED on Visa4UK- Family Vistor application correction

[josekumar]

I have filled application for visitor visa for my mom and submitted the application. Also I have booked the appointment and paid the visa fees as well. After taking the printout of the application noticed the passport number has typo error. I dont have option to correct the application now. Can anyone suggest me a option to rectify it?

Your help is much appreciated.

Thanks

[josekumar]

i had called Visa Enquiry Service and they confirmed that minor mistakes can be corrected infront of the staff and they will ask you to sign nearby if requried.