Yeah! Problem can be there as you will not be eligible for the seat based on your category. As you have mentioned you as your GENERAL category then you will not get the reserved category rank and you will get the General Merit Rank.

Now KEAM offers a correction period in which you can change the details. The dates aren't provided yet so keep some patience.

To know more about it visit the link below:

https://engineering.careers360.com/articles/keam-application-form-correction

I hope this answer helps.