This is the merchants secret key. You can pass this as the only parameter to list all sub-accounts on your profile.

This is the subaccount's account number, it can be used to retrieve the specific subaccount.

This is the bank code for the subaccount's bank, you can use the List of Banks for Transfer API to retrieve a bank code.

This is the subaccounts bank name e.g. Access Bank Nigeria, you can use the List of Banks for Transfer API to retrieve a bank name.