E Wallet Code ((free)) -

return f"Sent $amount to recipient_wallet.user_id"

# Credit Receiver INSERT INTO ledger_entries (wallet_id, amount, type) VALUES (receiver_wallet_id, amount, 'TRANSFER_IN'); e wallet code

While the backend handles the ledger, the frontend (mobile app) code handles the interface and security protocols. return f"Sent $amount to recipient_wallet

Here is how a robust transfer function looks in a backend language (like Java or Python): type) VALUES (receiver_wallet_id