Token Validation Failed code 9159 for x-pay-token, payments/flex/v1/keys

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Token Validation Failed code 9159 for x-pay-token, payments/flex/v1/keys

Hi All,

Can you please assist with the below POST to get the session key (cybersource flex). The code works if i point it to GET helloworld. I have followed your recommendations not to have \n and " " on the body, removed "cybersource/" from the request path, tried  both "apikey=" & "apiKey=". 


Error Response = {"responseStatus":{"status":401,"code":"9159","severity":"ERROR","message":"Token Validation Failed","info":""}}



String resourcePath = "payments/flex/v1/keys";
String queryString = "apikey=" + apiKey;
String requestBody = "{\"encryptionType\":\"RsaOaep256\"}";
url = new URL("" + queryString);

HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
con.setRequestProperty("Accept", "application/json,application/octet-stream");

xPayToken = generateXpaytoken(resourcePath, queryString, requestBody, sharedSecret);

public static String generateXpaytoken(String resourcePath, String queryString, String requestBody, String sharedSecret) throws SignatureException {
String timestamp = timeStamp();
String beforeHash = timestamp + resourcePath + queryString + requestBody;
String hash = hmacSha256Digest(beforeHash, sharedSecret);
String token = "xv2:" + timestamp + ":" + hash;
return token;

private static String timeStamp() {
return String.valueOf(System.currentTimeMillis()/ 1000L);

private static String hmacSha256Digest(String data, String sharedSecret)
throws SignatureException {
return getDigest("HmacSHA256", sharedSecret, data, true);

private static String getDigest(String algorithm, String sharedSecret, String data, boolean toLower) throws SignatureException {
try {
Mac sha256HMAC = Mac.getInstance(algorithm);
SecretKeySpec secretKey = new SecretKeySpec(sharedSecret.getBytes(StandardCharsets.UTF_8), algorithm);

byte[] hashByte = sha256HMAC.doFinal(data.getBytes(StandardCharsets.UTF_8));
String hashString = toHex(hashByte);

return toLower ? hashString.toLowerCase() : hashString;
} catch (Exception e) {
throw new SignatureException(e);

private static String toHex(byte[] bytes) {
BigInteger bi = new BigInteger(1, bytes);
return String.format("%0" + (bytes.length << 1) + "X", bi);


kind regards

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Re: Token Validation Failed code 9159 for x-pay-token, payments/flex/v1/keys

Hi @smol987 - looks like the same issue from a previous thread? 


Sharing in case this was different but Cybersource payments is no longer available on Visa Developer -  the only way to properly query the CyberSource Payments sandbox is to create a merchant account directly with CyberSource. (


Please let us know if we can help with anything else and someone will be happy to help.





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Re: Token Validation Failed code 9159 for x-pay-token, payments/flex/v1/keys

Thanks for the info Ricardo. Regards