# transfer · FT4 Rell API · Chromia Docs (concept)

> @mount("ft4.transfer")
operation transfer(recipient_ id: byte_ array, asset_ id: byte_ array, amount: big_ integer) Transfers tokens to a certain recipient

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.external.assets/transfer/

OPERATION

# transfer

```signature
@mount("ft4.transfer")
operation transfer(recipient_id: byte_array, asset_id: byte_array, amount: big_integer)
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/external/assets/operations.rell#lines-42)

Transfers tokens to a certain recipient.

* if the recipient exists, a normal transfer will take place;
* otherwise:
  + if account creation on transfer is enabled, the account registration procedure will
    be started;
  + an error is thrown

Must be signed by an auth descriptor with `accounts.auth_flags.TRANSFER`

Throws if the required assets cannot be transferred. Common cases include:

* the sender account's balance is lower than `amount`
* the amount to transfer is not in the accepted range (0, 2^256) (exclusive)
* some conditions added in development through transfer extensions (`before_transfer` or
  `after_transfer`) aren't met

**Parameters**

* **recipient\_id** — the account that should receive the transfer or be created
* **asset\_id** — id of the asset that should be sent
* **amount** — the amount to transfer

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.external.assets/transfer.html)Generated API reference, mirrored from the live docs