> For the complete documentation index, see [llms.txt](https://docs.rigoblock.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rigoblock.com/solidity-api-reference/protocol/extensions/egmxcallback.md).

# EGmxCallback

## EGmxCallback

GMX v2 order-execution callback extension. Records claimable collateral rebates and tracked markets in pool storage so NAV remains accurate after full closes, liquidations, and ADL.

*Runs as an extension (always delegatecalled). Only GMX controller contracts may invoke the callback handler.*

### NotGmxController

```solidity
error NotGmxController()
```

### InvalidCallbackAccount

```solidity
error InvalidCallbackAccount()
```

### NotArbitrum

```solidity
error NotArbitrum()
```

### constructor

```solidity
constructor() public
```

### onlyGmxController

```solidity
modifier onlyGmxController()
```

### afterOrderExecution

```solidity
function afterOrderExecution(bytes32, struct EventUtils.EventLogData orderData, struct EventUtils.EventLogData) external
```

Called by GMX after an order affecting this pool is executed.

#### Parameters

| Name      | Type                           | Description                          |
| --------- | ------------------------------ | ------------------------------------ |
|           | bytes32                        |                                      |
| orderData | struct EventUtils.EventLogData | Event log data describing the order. |
|           | struct EventUtils.EventLogData |                                      |