After having your DApp registered, on the “Add Smart Contract” page, enter the contract name, address and ABI, select Meta Transaction Type as “ERC20 Forwarder” then click “Add”.
After this step you need to add your APIs as mentioned in the steps in Biconomy Dashboard
Before using this API and SDK make sure you have native meta transaction support in your smart contracts i.e., you have removed the dependency on the msg.sender property from your smart contracts.
Inherit BaseRelayRecipient.sol and set the trusted forwarder address.
Use _msgSender() wherever you use msg.sender in your smart contract.
Added method setTrustedForwarder(address _forwarder) to change trusted forwarder address in future.