> ## Documentation Index
> Fetch the complete documentation index at: https://docs.base.org/llms.txt
> Use this file to discover all available pages before exploring further.

# IB20Asset.updateUIMultiplier

> Generated B20 reference for updateUIMultiplier(uint256,uint256).

## Signature

```solidity theme={null}
function updateUIMultiplier(uint256 newMultiplier, uint256 effectiveAt) external;
```

| Field               | Value                                 |
| ------------------- | ------------------------------------- |
| Selector            | `0x628e600f`                          |
| Canonical signature | `updateUIMultiplier(uint256,uint256)` |

## Description

Schedules a multiplier update to take effect at `effectiveAt` — the standard path
for corporate actions (splits, reinvested dividends).
Dev: Reverts with `AccessControlUnauthorizedAccount` when the caller does not hold `OPERATOR_ROLE`.
Dev: Reverts with `InvalidMultiplier` when `newMultiplier` is zero or above `type(uint128).max`.
Dev: Reverts with `EffectiveAtInPast` when `effectiveAt` is not in the future.
Dev: Reverts with `EffectiveAtTooFar` when `effectiveAt` exceeds `type(uint64).max`.
Dev: Reverts with `UIMultiplierUpdateExists` when a live pending update already exists.
Param: newMultiplier New multiplier scaled to `WAD_PRECISION`.
Param: effectiveAt   Timestamp at which `newMultiplier` becomes effective; must be in the future.

## Access control

`OPERATOR_ROLE` gates this Asset call.

## Policy interaction

No direct policy interaction.

## Example

```solidity theme={null}
IB20Asset(target).updateUIMultiplier(arg0, arg1);
```

## Related

* [IB20Asset reference](/base-chain/specs/upgrades/beryl/b20/specification/reference/interfaces/IB20Asset)
* [Constants & addresses](/base-chain/specs/upgrades/beryl/b20/specification/reference/constants-and-addresses)