# What is the Multi Token Parameter?

The `multi_token` parameter is only available for TRC-20, BEP-20 and ERC-20 networks. It's also an optional parameter, meaning that you don't need to set it while making a request. Its default value is `0`.

This parameter allows the same `address_in` to receive payments in any token supported by our system.

## Important Considerations

When setting this parameter you should make sure your wallet address (`address_out`) supports the tokens you expect your clients to pay with. **BlockBee cannot reverse any transaction or payment of a token unsupported by your wallet.**

This parameter also means your clients can pay on any token supported by our system, even tokens with very different prices, so your system should check the `coin` field and make the appropriate price conversions. 

### Example Scenario

If you wish to receive 1000 USDT (or equivalent) and your client sends 1000 DOGE, your system should be able to handle that scenario when processing the callback.

## Related Documentation

For more information about the fields and parameters mentioned:

- [Create Payment Address - multi_token parameter](/api/create-payment-address#multi_token)
- [Custom Payment Flow Webhooks - coin field](/webhooks/custom-payment-flow-webhooks)