did you know if you open a HYSA at american express, you cannot transfer funds from a business checking account linked to that HYSA?
the only way to do it would be AMEX checking -> some other account -> AMEX HYSA
and this has apparently been an issue for YEARS
@molly0xfff "falsehoods programmers believe about addresses" was one of those lists that made the rounds ten years ago. Some things apparently never change...