After filling out literally hundreds of job applications, let me say, his discharge means pretty much diddly.
Number one, don't ask, don't tell. If he never reported for duty, he was never in the Army. At best he was in a delayed entry program.
Regardless, most applications only ask if you're a "protected" veteran. Basically, someone who served during a period of hostilities. If you served during cold war or post cold war periods, you might as well not have served.
Service doesn't mean what it use to, and discharges don't mean as much either. Unless applying for gov't sector where security clearances are involved, it doesn't matter.
Roughly half of the applications I've completed ask about prior service. I can't remember ONE asking type of discharge.
If he never reported for duty, he was never in the service, period.
Second, those enlisting on active duty will have at least two enlistment contracts -- the initial contract for the Delayed Enlistment Program, and a final contract that one will sign on the day they go to MEPS to ship out to basic training. The contract that COUNTS is the final contract. It doesn't matter if your enlistment bonus, advanced rank, college loan repayment program, college fund, etc., are not included in the first contract. However, you need to make sure all of your desired incentives are included in the final active duty contract (if your enlistment program/job choice entitles you to those incentives).
Did your relative sign the final one??