IB20.transferFrom

Generated B20 reference for transferFrom(address,address,uint256).

Signature

function transferFrom(address from, address to, uint256 amount) external returns (bool);

Field	Value
Selector	0x23b872dd
Canonical signature	transferFrom(address,address,uint256)

Description

Transfers amount from from to to using msg.sender’s allowance. Emits Transfer.

Parameters

Parameter	Description
from	Source address.
to	Destination address.
amount	Amount to transfer.

Returns

Always true on success.

Reverts

• ContractPaused(TRANSFER) when TRANSFER is paused.
• InvalidReceiver when to == address(0).
• InvalidSender when from == address(0).
• InsufficientAllowance when the caller’s allowance from from is below amount.
• PolicyForbids(TRANSFER_EXECUTOR_POLICY, ...) when msg.sender != from and msg.sender is not authorized.
• PolicyForbids(TRANSFER_SENDER_POLICY, ...) when from is not authorized.
• PolicyForbids(TRANSFER_RECEIVER_POLICY, ...) when to is not authorized.
• InsufficientBalance when from’s balance is below amount.

Access control

Read-only or ERC-20-standard access rules unless the NatSpec states otherwise.

Policy interaction

Checks TRANSFER_EXECUTOR_POLICY when msg.sender != from, plus sender and receiver transfer scopes.

Example

IB20(target).transferFrom(from, to, amount);