Tandem use limits are printed on the panel label; surpassing them risks overheating and voids listings

https://martinboga129.pinehavenscope.com/posts/the-function-of-the-electrical-panel-in-home-electrical-systems

Tandem use limits are printed on the panel label; surpassing them risks overheating and voids listings, so plan expansions with a subpanel if required securely.