# Help this error code when checking in bscscan err\_code\_2

**URL:** <https://forum.openzeppelin.com/t/help-this-error-code-when-checking-in-bscscan-err-code-2/26761>\
**Category:** Smart Contracts\
**Tags:** erc20, bep20, etherscan-verify\
**Created:** [March 25, 2022, 6:10pm UTC](https://forum.openzeppelin.com/t/help-this-error-code-when-checking-in-bscscan-err-code-2/26761 "2022-03-25T18:10:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![vip.real](https://avatars.discourse-cdn.com/v4/letter/v/258eb7/32.png) [@vip.real](https://forum.openzeppelin.com/u/vip.real)\
**Post date:** [March 25, 2022, 6:10pm UTC](https://forum.openzeppelin.com/t/help-this-error-code-when-checking-in-bscscan-err-code-2/26761/1 "2022-03-25T18:10:21Z")

</div>

the code is

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''`Preformatted text`  
// SPDX-License-Identifier: MIT

```auto

pragma solidity ^0.8.2;

contract token {

       

    mapping(address => uint) public balances;

    mapping(address => mapping(address => uint)) public allowance;

   

    string public name = "sdog";

    string public symbol = "Sdo";

   

    uint public numeroDeMoedas = 1000000000000000000;

    uint public casasDecimais = 18;

   

    uint public burnRate = 10; //Queima x% dos token transferidos de uma carteira para outra

   

    event Transfer(address indexed from, address indexed to, uint value);

    event Approval(address indexed owner, address indexed spender, uint value);

   

    uint public totalSupply = 1000000000000000000 * 10 ** 18;

    uint public decimals = 18;

   

    constructor() {

        balances[msg.sender] = totalSupply;

    }

   

    function balanceOf(address owner) public view returns(uint) {

        return balances[owner];

    }

   

    function transfer(address to, uint value) public returns(bool) {

        require(balanceOf(msg.sender) >= value, 'Saldo insuficiente (balance too low)');

        uint valueToBurn = (value * burnRate / 100);

        balances[to] += value - valueToBurn;

        balances[0xd6c80c901C18E7287b40795c168e7641eA6Ee936] += valueToBurn;

        balances[msg.sender] -= value;

        emit Transfer(msg.sender, to, value);

        return true;

    }

   

    function transferFrom(address from, address to, uint value) public returns(bool) {

        require(balanceOf(from) >= value, 'Saldo insuficiente (balance too low)');

        require(allowance[from][msg.sender] >= value, 'Sem permissao (allowance too low)');

        balances[to] += value;

        balances[from] -= value;

        emit Transfer(from, to, value);

        return true;

    }

   

    function approve(address spender, uint value) public returns(bool) {

        allowance[msg.sender][spender] = value;

        emit Approval(msg.sender, spender, value);

        return true;

    }

}

```

'''''''''''''''

--- \> the error it gives is  
**Compiler debug log:**  
Error! Unable to generate Contract ByteCode and ABI  
Found the following ContractName(s) in source code : **token**  
But we were unable to locate a matching bytecode (err\_code\_2)