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

> @mount("ft4.crosschain.recall_ unclaimed_ transfer")
operation recall_ unclaimed_ transfer(init_ transfer_ tx: gtx_ transaction, init_ tx_ op_ index: integ

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

OPERATION

# recall\_unclaimed\_transfer

```signature
@mount("ft4.crosschain.recall_unclaimed_transfer")
operation recall_unclaimed_transfer(init_transfer_tx: gtx_transaction, init_tx_op_index: integer)
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/external/crosschain/operations.rell#lines-894)

Recalls an unclaimed transfer. A transfer does not generally need to be claimed, unless
account registration on crosschain transfers is configured on the target chain.

If it is, when a crosschain transfer is sent to that chain and the recipient account does
not exist, the transfer is considered the start of an account registration process. The
account is not automatically created, and account registration strategies must be used to
claim the transfer and create an account.

If this is not done within the transfer deadline, the transfer can be recalled on the
target chain, unapplied on all intermediate chains if any, and reverted on the init chain
to move the funds back to the original sender.

Throws `"ACCOUNT REGISTRATION DISABLED"` if this chain is not configured to allow account
registration on crosschain transfers. This means that a transfer can never end up unclaimed.

Throws `"WRONG BLOCKCHAIN"` if the transfer has a target chain different from this one.

Throws `"INVALID TRANSACTION"` if the transaction has either:

* never been applied here
* already been recalled

Throws if any conditions on the recall of crosschain account registration (defined as
extensions to `recall_on_crosschain_transfer`) are not met

Throws if `init_tx_op_index` does not point to `init_transfer` on `init_transfer_tx`

Throws if the operation preceding the `init_transfer` on `init_transfer_tx` is not an
auth operation

This operation can be called by anyone after the timeout has expired.

**Parameters**

* **init\_transfer\_tx** — the init transaction, which contains `init_transfer`, as it was submitted to the init chain
* **init\_tx\_op\_index** — the index of the `init_transfer` operation in `init_transfer_tx`

**See Also**

* `core.auth.is_auth_op` — for information on auth operations
* `core.crosschain.applied_transfers` — to know more about the crosschain transfer workflow
* `core.crosschain.recalled_transfers` — to know more about transfer recalling
* `core.crosschain.create_on_crosschain_transfers` — for more information on registering accounts with crosschain transfers
* `core.accounts.strategies.register_account` — for more information on register account strategies

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