If you attempt to make a transfer to a non-existent Pix key, you will be immediately alerted about the error. After correcting it, you can try again.
If you make a transfer to the wrong key and the money is sent, contact the recipient to inform them of the issue and rectify the situation.
Important: According to the rules of the Central Bank, only the recipient can return a Pix transfer. AstroPay cannot cancel the transaction or request the return of funds from transfers made by mistake.