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

# ERC721A__IERC721Receiver

[Git Source](https://github.com/forte-service-company-ltd/forte-rules-engine/blob/1f7450a94147e76e3930c235a18534779130abee/src/example/ERC721A/ERC721A.sol)

*Interface of ERC721 token receiver.*

## Functions

### onERC721Received

```solidity
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data)
    external
    returns (bytes4);
```