It may be useful to include what the rules have to say here:
https://tgstation13.org/wiki/Rules
Under Server Rule 3 Precedents:
Excessively OOC names fall under rule 3. Make a minimum effort to have your name fit in a setting involving a wacky space station in the future. A firstname lastname minimum is required for humans and felinids; other species may instead choose to use the default names assigned to them, such as those given through random names, or otherwise any name that is species-appropriate. Honorifics and nicknames are allowed as long as only one additive is used at a time, i.e "James Williams Jr." or "James "One-Eye" Williams". Admins may get involved if your name is dumb and can approve or disallow names at their discretion while in-game.
Excessively OOC is defined as names which are intentionally hard to read/spell, references to in-game mechanics or OOC terminology, and any form of nonsensical/bad-faith name (ex. Adolf Hitler, FAGGOT PUNCHER, Poop Boy, xXrobustspaceman420Xx etc).
Clowns, mimes, silicons, wizards, and nuke ops have significantly more leeway in choosing their names, but try to be reasonable.
Historically, silicons have a lot of freedom in name selection as the rules state, but that freedom only gives silicons freedom to pick sillier but still appropriate names.
Examples of acceptable silicon names can be found across all of our servers, but usually end up being either a serial number-like name...
R4E-TP
LQ-84i
An attempt at some sort of human-like name, possible with some classical machine twist
Replica Vexen IV
Amaretto
Some sort of pun or wordplay around computer concepts.
EM-R4LD.exe
Microsoft Borg
Or some punny and/or irreverant name made to look like an acronym, even where not computer related.
G.O.D.B.O.X.
C.L.O.C.K.W.O.R.K.
A.E.G.I.S.
Silicon names are VERY flexible and looking at what are generally considered "acceptable" names may highlight where your attempted names seem to have failed by contrasting example:
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAA4
ÄĂĄÆ4 (This won't pass the naming filters and it's against the rules as intentionally hard to read/spell)
It all depends on the context of your name.
"AA" probably wouldn't be acceptable.
"AA Battery" probably would be borderline.
"AA Battery Not Included" probably would be fine.