Sleeper leagues are optimized for friends & people who know each other, or strangers that share a common interest.

We allow the commissioner(s) to make the decision around canceling trades, thus do not support veto-ing currently. We may add veto as a feature in the future, but it would never be a default due to how often it is abused for perfectly fine trades.

If your league has rules around voting to pass a trade or cancel a pending trade, one way to do it is to put up a poll for the specific egregious trade, and if it passes a certain amount, the commissioner manually cancels it.

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