> 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/messageservice/l2/l2messageservice.md](https://docs.linea.build/api/linea-smart-contracts/messageservice/l2/l2messageservice.md). # L2MessageService # `L2MessageService` ### CONTRACT_VERSION ```solidity string CONTRACT_VERSION ``` _This is the ABI version and not the reinitialize version._ ### constructor ```solidity constructor() public ``` ### initialize ```solidity function initialize(uint256 _rateLimitPeriod, uint256 _rateLimitAmount, address _defaultAdmin, struct IPermissionsManager.RoleAddress[] _roleAddresses, struct IPauseManager.PauseTypeRole[] _pauseTypeRoles, struct IPauseManager.PauseTypeRole[] _unpauseTypeRoles) external ``` Initializes underlying message service dependencies. #### Parameters | Name | Type | Description | | --- | --- | --- | | _rateLimitPeriod | uint256 | The period to rate limit against. | | _rateLimitAmount | uint256 | The limit allowed for withdrawing the period. | | _defaultAdmin | address | The account to be given DEFAULT_ADMIN_ROLE on initialization. | | _roleAddresses | struct IPermissionsManager.RoleAddress[] | The list of addresses to grant roles to. | | _pauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of pause type roles. | | _unpauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of unpause type roles. | ### reinitializePauseTypesAndPermissions ```solidity function reinitializePauseTypesAndPermissions(struct IPermissionsManager.RoleAddress[] _roleAddresses, struct IPauseManager.PauseTypeRole[] _pauseTypeRoles, struct IPauseManager.PauseTypeRole[] _unpauseTypeRoles) external ``` Sets permissions for a list of addresses and their roles as well as initialises the PauseManager pauseType:role mappings. _This function is a reinitializer and can only be called once per version. Should be called using an upgradeAndCall transaction to the ProxyAdmin._ #### Parameters | Name | Type | Description | | --- | --- | --- | | _roleAddresses | struct IPermissionsManager.RoleAddress[] | The list of addresses and roles to assign permissions to. | | _pauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of pause types to associate with roles. | | _unpauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of unpause types to associate with roles. | 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.