> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-mux-docs-claude-6.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IB20.renounceLastAdmin

> Generated B20 reference for renounceLastAdmin().

## Signature

```solidity theme={null}
function renounceLastAdmin() external;
```

| Field               | Value                 |
| ------------------- | --------------------- |
| Selector            | `0x6f79e3d7`          |
| Canonical signature | `renounceLastAdmin()` |

## Description

Permanently transitions the token to a zero-admin state. Revokes `DEFAULT_ADMIN_ROLE` from `msg.sender`. Emits `RoleRevoked(DEFAULT_ADMIN_ROLE, msg.sender, msg.sender)` and `LastAdminRenounced(msg.sender)`.

## Reverts

* `AccessControlUnauthorizedAccount` when `msg.sender` does not hold `DEFAULT_ADMIN_ROLE`.
* `NotSoleAdmin` when other accounts also hold `DEFAULT_ADMIN_ROLE`.

## Access control

Uses the B20 access-control role graph. Factory initCalls bypass role gates during creation.

## Policy interaction

No direct policy interaction.

## Example

```solidity theme={null}
IB20(target).renounceLastAdmin();
```