How did England breach ICC's anti-corruption code with release of Ben Stokes' retirement video?

The International Cricket Council (ICC) has issued an official letter to the England and Wales Cricket Board (ECB) over a potential protocol breach involving a social media video of Ben Stokes. Notably, ECB uploaded a video of Stokes announcing his retirement to his teammates on their social media on Day 4 of the third Test between England and New Zealand at Trent Bridge. It captured an emotional farewell speech, but it was enough to breach the ICC’s anti-corruption code.