message.phoneCountryCode is the ISO 3166-1 alpha-2 code of the country the phone number belongs to, not the cardholder's nationality. The number length is validated against that country's numbering plan.phoneNumber must exclude the dialling prefix and any leading zero, and must be unique across your account.status is ACTIVE.curl --location '/api/v1/issuing/cardholder/create' \
--header 'Content-Type: application/json' \
--data-raw '{
"firstName": "Wei",
"lastName": "Tan",
"email": "wei.tan@example.com",
"phoneCountryCode": "SG",
"phoneNumber": "91234567",
"externalId": "user-88213"
}'{
"code": 200,
"message": "success",
"data": {
"cardholderNo": "string",
"status": "string",
"kycStatus": "string",
"firstName": "string",
"lastName": "string",
"email": "string",
"phoneCountryCode": "string",
"phoneNumber": "string",
"cardCount": 0,
"externalId": "string",
"remark": "string",
"createTimeUtc": "2019-08-24T14:15:22.123Z"
}
}