curl --location --request POST 'https://api.cash-in.com/v2/externaldirectpayment' \
--header 'X-Api-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '[
{
"InvoiceNumber": 0,
"TargetSystemInvoiceId": 0,
"PaymentDate": "2024-09-21",
"PaymentType": "string",
"PaymentAmount": -999999999999999,
"PaymentCurrency": "SEK",
"PaymentIdentifier": "string",
"Owner": "1"
}
]'{
"Message": "string",
"DirectPaymentCount": 0
}