Appreciate that squad numbers aren't exactly the most pressing of data issues, but there's so many errors in here it's a little annoying to see as a fan of the team. A lot of players don't seem to have numbers set at the start of the game (Original database, Korea Early Preseason Start Date), which probably accounts for a lot of the strange ones I've seen using set-ups that start in August, but there's some errors in the defaults too. For the sake of brevity, I'll only include numbers that need fixing or adding.
Goalkeepers:
Jeong Myeong-Jae should be #30, not #31.
Defenders:
Kang Eui-Bin should be #3, not #4. Patrick Flottmann should be #5. Kim Jin-Rae should be #16. Lee Ji-Hun should be #17, not #18. Jo Sung-Wook should be #20, not #26. Jung Seung-Yong should be #23. Yang Si-Hoo should be #44, not #24. You Sun should be #77.
Midfielders:
Lee Sang-Min should be #4. Park Sang-Hyeok should be #8. Moon Chang-Jin should be #21, not #32. Jang Young-Gi should be #24. Yang Tae-Yang should be #28, not #34. Park Ji-Won should be #47, not #30. Park Tae-Jun should be #55, not #28.
Attackers:
Denilson should be #9. Shim Dong-Woon should be #11. Yoo Ju-Ahn should be #13. Shin Jae-Won should be #15. Kim Won-Joon should be #18. Jung Han-Min should be #19. Park Hyun-Bin should be #26. Lee Jun-Sang should be #27, not #35. Jin Seong-Uk should be #93. Gabriel Honorio should be #96.
This gives every player in the squad (not out on loan) a squad number, matching what's listed on Seongnam's official website.
As an additional note, I think Jeong Myeong-Jae's starting ability is way too wide of a range; he went from comfortably best goalkeeper in my first database to not-even-good-enough-for-youth-football in my current database. Feel like he should be a decent back-up (2 stars compared to Kim Young-Kwang and Choe Pil-Soo's 3 stars, perhaps? Appreciate that stars isn't a particularly useful metric, but I can't see CA right now) but not much better than that, and certainly not so bad that he's useless.
I'm not sure what the age cut-off for youth players is either, but there are a few players listed in the U-18 section of Seongnam's website that I feel like should be included (2005/2006 birth dates), but appreciate there's probably little to no research on them available making inclusion harder.
There's also a few U18 youth coaches not included when they probably could be, again listed on the website, those being Kim Tae-Youn (ID: 5710848, currently a free agent, should be retired into an Assist Manager/Coach) as an Assistant Manager, Han Il-Gu (birthday: 18th February 1987) as a Goalkeeper Coach, and Ha Ji-Won (birthday: 16th October 1997) as a Coach.
Other than that, the data looks pretty good compared to what I see on the Seongnam website. Thanks for the hard work, looking forward to another year of FM!