> For the complete Linea documentation index, see [llms.txt](/llms.txt). > Agents can fetch this page as Markdown at [https://docs.linea.build/api/linea-smart-contracts/interfaces/l2/il2messagemanagerv1.md](https://docs.linea.build/api/linea-smart-contracts/interfaces/l2/il2messagemanagerv1.md). # IL2MessageManagerV1 # `IL2MessageManagerV1` ### MinimumFeeChanged ```solidity event MinimumFeeChanged(uint256 previousMinimumFee, uint256 newMinimumFee, address calledBy) ``` Emitted when L2 minimum fee is changed. #### Parameters | Name | Type | Description | | --- | --- | --- | | previousMinimumFee | uint256 | The previous minimum fee in Wei. | | newMinimumFee | uint256 | The new minimum fee in Wei. | | calledBy | address | The indexed address who changed the minimum fee. | ### L1L2MessageHashesAddedToInbox ```solidity event L1L2MessageHashesAddedToInbox(bytes32[] messageHashes) ``` Emitted when L1->L2 message hashes have been added to L2 storage. #### Parameters | Name | Type | Description | | --- | --- | --- | | messageHashes | bytes32[] | The message hashes that were added to L2 for claiming. | ### MessageHashesListLengthHigherThanOneHundred ```solidity error MessageHashesListLengthHigherThanOneHundred(uint256 length) ``` _Thrown when the message hashes list length is higher than one hundred._ ### MessageDoesNotExistOrHasAlreadyBeenClaimed ```solidity error MessageDoesNotExistOrHasAlreadyBeenClaimed(bytes32 messageHash) ``` _Thrown when the message does not exist or has already been claimed._ Contributions not accepted These reference pages are automatically generated based on Linea's [smart contracts](https://github.com/Consensys/linea-monorepo/tree/main/contracts/src). To ensure they accurately match the deployed smart contracts, we cannot accept any contributions that edit these pages.