curl --location --request POST 'https://api.cash-in.com/v2/gencustomers' \
--header 'X-Api-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '[
{
"SalesName": "string",
"StreetAddress": "string",
"AdditionalStreetAddress": "string",
"PostalPlace": "string",
"PostalCode": "string",
"CountryCode": "st",
"CustomerType": "s",
"EmailAddress": "user@example.com",
"Telephone": "string",
"SellersCustomerCode": "string",
"SalesIdentifier": "string",
"DefaultDeliveryType": "s",
"LanguageCode": "st"
}
]'