Betfair's response is "we are aware that some users use api products to circumvent the below minimum".
The problem is their api accepts these bets, users are not circumventing anything. It's built into their api platform.
Instead of mass waring users, they should simply change the api code to reject below minimum.
But they won't, as too many users need to bet below minimum to green up, lay the field, dutch bet the field etc etc.

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