# Unused `TransferFailed` error in `CodeupERC20` Low/Info · Three Sigma · DeFi game · 23rd October, 2024 Finding I-5 of the CODEUP security review. - Report: /reports/codeup - Source: https://cdn.sanity.io/files/qoqld077/staging/d9e57830a75b5165fd56e8b88037de7986a165ec.pdf --- ### Description The `TransferFailed` error in `CodeupERC20` is not used and can be removed. ### Recommendation Remove this error. --- Related findings: - [Erc20Utils::safeTransferFrom() assumes the tokens are transferred to this, which may not be the case](https://0xsimao.com/findings/districtone-erc20-utils-transfer-transferred): DistrictOne - [transferFrom in ERC20Extended will always emit an Approval event if the allowance changes](https://0xsimao.com/findings/m-0-transfer-erc20-approval-allowance): M^0 Minter Gateway