I have set the author name, but it is not reflected. I don't know why.
There is a reason why sponsorship income is set so high.
If settings are made in accordance with reality, the number will decrease by more than half after a few years.
For example, if you set sponsorship income at 4 billion, it will drop to around 1 billion in a few years.
After more than 20 years, there are clubs with almost no sponsorship income.
This is a national rule setting, not a club-specific setting.
On the contrary, players' salaries are increasing.
Unless some adjustments are made, most clubs will be financially unstable. This is part of that adjustment.
There will be clubs that earn higher sponsorship income than reality. But it's temporary.
Sponsorship income decreases with each passing year.
It's not a problem with this file, it's a problem with the FM system.
For reference, this is J1's sponsorship income after 30 years.
Even with the current setup, most clubs receive less sponsorship revenue than they actually do.