This means that Niantic knows you caught those pokemon using the third party API capturepokemon uses via Bossland. The API is detectable now & pokemon caught in the future will more then likely result in them having a red line across them & they will basically be rendered useless in battle/gyms. This also means Niantic knows you used the API and you COULD be banned in the future, the red line warnings are a newer implementation by Niantic and there is not really any further information I can provide for you.