Transaction Reference added to payout payload

An optional fieldtransaction_referencehas been added to the initiate direct payout payload to allow businesses identify duplicate transactions for a payout.

{
    "currency": "NGN",
    "remarks": "00020",
    "transaction_reference": "4de1d015-d909-4f83-ad2c-c5cf7b16ef14",
    "accounts": [
        {
            "amount": 120000,
            "remarks": "TM-bcfc37778ba4",
            "destination": {
                "bank_details": {
                    "account_name": "SABI KETU",
                    "account_number": "90254323333",
                    "bank_code": "304"
                }
            }
        }
    ],
    "beneficiary_type": "single"
}