PROCEDURES FOR CORRECTION OF COURSE OF STUDY ON NYSC PLATFORM
Login to your dashboard and click on the link for Correction of Course of Study;
Select Course of Study; and
Click SUBMIT

PROCEDURES FOR CORRECTION OF DATE OF BIRTH
Henceforth, information from the West African Examination Council (WAEC) will now be used to effect changes on the NYSC portal as from the 2017 Batch 'A' online Registration. The new procedure is to:

Login to your dashboard and click on the link to Date of Birth;
Enter WAEC Verification PIN,
select WAEC Type, Year of exam and enter your Examination Number; and
Click on Verify button
Click SUBMIT or CANCEL

SOURCE: http://myschoolinfor..com.ng/2017/04/new-procedures-for-correction-of-course.html