The tag alias #69278 horomidarknait -> shedarkorstar has been rejected.

Reason: Obvious.

EDIT: The tag alias horomidarknait -> horomi_darknait (forum #399943) has been rejected by @Cinder.

Still required to put a reason
Their FA https://www.furaffinity.net/user/horomidarknait has display name horomi_darknait
However they refer to themselves in the about me as Hi! I'm Shedar~, with their deviantart called shedaria.
Their FA links to their carrd where they refer to themselves as shedaria (shedar)
Their boosty refers to themselves as Shedar (though their username is ShedarKorstar)
They use ShedarKorstar on twitter

My plan is: Alias them all to ShedarKorstar. This is because there's another artist using shedarart, so shedar is not a good alias destination.

Reject the above alias because it's blocking and I can't post the BUR
alias horomidarknait -> shedarkorstar alias horomi_darknait -> shedarkorstar # duplicate of has blocking transitive relationships, cannot be applied through BUR alias shedar -> shedarkorstar

The tag alias horomidarknait -> horomi_darknait (forum #399943) has been rejected by @Cinder.

The bulk update request #7650 is active.

create alias horomidarknait (3) -> shedarkorstar (3)
create alias horomi_darknait (6) -> shedarkorstar (3)

Reason: Correction of forum #399943

EDIT: The bulk update request #7650 (forum #401421) has been approved by @Cinder.

The bulk update request #7650 (forum #401421) has been approved by @Cinder.

snpthecat said:
Still required to put a reason
Their FA https://www.furaffinity.net/user/horomidarknait has display name horomi_darknait
However they refer to themselves in the about me as Hi! I'm Shedar~, with their deviantart called shedaria.
Their FA links to their carrd where they refer to themselves as shedaria (shedar)
Their boosty refers to themselves as Shedar (though their username is ShedarKorstar)
They use ShedarKorstar on twitter

My plan is: Alias them all to ShedarKorstar. This is because there's another artist using shedarart, so shedar is not a good alias destination.

Reject the above alias because it's blocking and I can't post the BUR

I've excluded alias shedar -> shedarkorstar from the BUR, since as you said shedar is used by a different artist.
I didn't spend too much time looking into the matter, so if you think that alias is still viable, feel free to create it.