Go to the Beneficiaries list in your app or online banking, find the beneficiary, and select Delete/Remove if the service is available.
Steps
Some banks may require an OTP or additional confirmation, and some only allow deletion through a specific channel.
If you can't find the Delete button, don't randomly add a new copy of the same beneficiary; consult your bank's instructions or customer service.
After deleting the beneficiary, make sure they are removed from the list before making any new transfers.