noun

the action or process of correcting something.

I checked the typing for errors and sent it back for correction

rectifying,rectification,righting,putting right,setting right,putting to rights,amendment,emendation,alteration,altering,adjustment,adjusting,modification,modifying,repair,remedy,resolution,revision,improvement,improving,amelioration,sorting out,clearing up,patching up,ironing out,tweaking,reparation