You can only cancel a payment if the person you sent money to hasn’t yet enrolled with Zelle®. To check whether the payment is still pending because the recipient hasn’t yet enrolled, you can go to your activity page, choose the payment you want to cancel, and then select Cancel This Payment.
If the person you sent money to has already enrolled with Zelle®, the money is sent directly to their bank account and cannot be canceled. This is why it’s important to only send money to people you trust, and always ensure you’ve used the correct email address or U.S. mobile number when sending money.