IB20.revokeRole

Revokes a role from an account on a B20 token.

Signature

IB20.sol

function revokeRole(bytes32 role, address account) external;

Field	Value
Selector	0xd547741f
Canonical signature	revokeRole(bytes32,address)

Description

Revokes role from account and emits RoleRevoked(role, account, sender). B20 follows OpenZeppelin AccessControl semantics, under which revoking a role the account does not hold changes nothing and emits no event.

Parameters

Parameter	Description
role	Role to revoke.
account	Account to revoke from.

Reverts

• AccessControlUnauthorizedAccount: caller does not hold the admin role for role, or the token has no admins (transitioned via renounceLastAdmin).
• LastAdminCannotRenounce: role == DEFAULT_ADMIN_ROLE and account is the last remaining DEFAULT_ADMIN_ROLE holder. Use renounceLastAdmin to clear the final admin intentionally.

Access Control

The caller must hold getRoleAdmin(role). On a fresh token every role’s admin is DEFAULT_ADMIN_ROLE. After setRoleAdmin is called the new admin role applies; revokeRole is not hardcoded to DEFAULT_ADMIN_ROLE.

Policy Interaction

No direct policy interaction.

Example

Usage Example

IB20(target).revokeRole(MINT_ROLE, account);