Check

{
	"ID": "",
	"ExternalID": "",
	"TxnNumber": "",
	"IsCharge": false,
    'ToBePrintedLater': false,
	"AccountRef": {
		"ID": "",
		"FullName": "[required]"
	},
	"PayeeEntityRef": {
		"ID": "",
		"FullName": "[required]"
	},
	"Address": {
		"Addr1": "",
		"Addr2": "",
		"Addr3": "",
		"Addr4": "",
		"Addr5": "",
		"City": "",
		"State": "",
		"PostalCode": "",
		"Country": ""
	},
	"TxnDate": "",
	"RefNumber": "",
	"Memo": "",
	"Amount": 0.0 [required],
	"ItemLineItems": [
		{
			"ItemRef": {
				"ID": "",
				"FullName": "[required]"
			},
			"Description": "",
			"Quantity": 0.0,
			"Cost": 0.0,
			"Amount": 0.0,
			"CustomerRef": {
				"ID": "",
				"FullName": ""
			},
			"IsBillable": "false",
			"ClassRef": {
				"ID": "",
				"FullName": ""
			}
		}
	],
	"ExpLineItems": [
		{
			"AccountRef": {
				"ID": "",
				"FullName": "[required]"
			},
			"Amount": 0.0 [required],
			"Memo": "",
			"CustomerRef": {
				"ID": "",
				"FullName": ""
			},
			"IsBillable": "false",
			"ClassRef": {
				"ID": "",
				"FullName": ""
			}
		}
	]
}