I am trying to call sp-api put item request and below is my code
var amz_url = "https://api.amazon.com/auth/o2/token",
grant_type = "refresh_token",
refresh_token = "{refreshtoken}",
client_id = "amzn1.application-oa2-client.e87c20f1bc464aad8652******",
client_secret = "46b8fbaef6285e8245b3a99d5a15ac8773e9d775bca44cb2220738a5f1*****";
authorization code
let headers = ({
'Content-Type': 'application/x-www-form-urlencoded',
'Accept': '*/*',
'Accept-Encoding': 'gzip, deflate, br',
'Connection': 'keep-alive',
'Cache-Control': 'no-cache',
'Host': 'api.amazon.com'
});
let response = https.post({
url: amz_url,
body: { grant_type: '' + grant_type + '', refresh_token: '' + refresh_token + '', client_id: '' + client_id + '', client_secret: '' + client_secret + '' },
headers: headers
});
log.debug("resp-code", response.code);
log.debug("resp-body", JSON.parse(response.body).refresh_token);
var accessToken = JSON.parse(response.body).access_token;
//log.debug('Response is ', accessToken); //token retrieved successfully
All good till here
// Getting access token - END
// Getting STS token
var awsMainAccessKey = "AKIA4OOZPXxxxxxxx",
awsMainSecretKey = "QbcC9g9ylrEGoy4aEUJ0uMkyq6xxxxxxx";
var stsResponse = stsRequest(awsMainAccessKey,awsMainSecretKey);
//Calculating timestamp in ISO 8601 format
var today = new Date();
var ISO8601Date = getXAmzDate();
log.debug('ISO 8601 date format ', ISO8601Date);
var bodyObj = {},
condArray = [],
itemArray = [],
attributesObj = {},
marketPlaceId = "A1F83G8C2ARO7P",
sellerId = "A3F8NJ8FFYFH4O",
productSKU = "TKR45UVDS";
body hash for this being generated differently than what amazon is expecting
var bodyObj_final = {
"productType": "LUGGAGE",
"requirements": "LISTING",
"attributes": {
"condition_type": [
{
"value": "new_new",
"marketplace_id": marketPlaceId
}
],
"item_name": [
{
"value": "AmazonBasics 16 Underseat Spinner Carry-On",
"language_tag": "en_US",
"marketplace_id": marketPlaceId
}
]
}
}
bodyObj.productType = "LUGGAGE";
//bodyObj.productType = "LUGGAGE";
condArray.push({
"value": "new_new",
"marketplace_id": marketPlaceId
});
itemArray.push({
"value": "DC Basics 16 Inches rterdfertr",
"language_tag": "en_UK",
"marketplace_id": marketPlaceId
});
attributesObj.condition_type = condArray;
attributesObj.item_name = itemArray;
bodyObj.attributes = attributesObj;
var secToken = stsResponse.Credentials.SessionToken;
method = 'PUT';
var contenthash = "beaead3198f7da1e70d03ab969765e0821b24fc913697e929e726aeaebf0eba3";
Canonical uri and query string
canonical_uri = encodeURI('/listings/2021-08-01/items/' + sellerId +'/'+productSKU);
//canonical_uri = '';
canonical_querystring = encodeURI('marketplaceIds')+'='+encodeURI('A1F83G8C2ARO7P');
//canonical_querystring = '';
var hmacsha256Data = CryptoJS.SHA256(JSON.stringify(bodyObj_final));
var payload_hash = CryptoJS.enc.Hex.stringify(hmacsha256Data);
//canonical_headers = 'host:' + 'sellingpartnerapi-eu.amazon.com' + '\n' + 'x-amz-access-token:' + accessToken + '\n' + 'x-amz-date:' + ISO8601Date + '\n';
canonical_headers = 'host:' + 'sellingpartnerapi-eu.amazon.com' + '\n' + 'x-amz-content-sha256:' + contenthash + '\n'+ 'x-amz-date:' + ISO8601Date + '\n'+ 'x-amz-security-token:' + secToken + '\n';
signed_headers = "host;x-amz-content-sha256;x-amz-date;x-amz-security-token";
//log.debug('Payload hash data ', hmacsha256Data);
log.debug('Payload payload_hash ', payload_hash);
var paylhash = "31ff10db41d2c210f7beb1adcd5b71c5ab2ec7ed13ad3972be88ff06db177aed";
//var paylhash = "209c90ceefe76183a6d038fd4474a0d2bc326bfea21b72722474f8e8f395c263";
//var paylhash = "1782d2d6f688ed659a8a0b511d97525843bc9d727c4d792b37c29e67df57fc8f";
canonical_request = method + '\n' + canonical_uri + '\n' + canonical_querystring + '\n' + canonical_headers + '\n' + signed_headers + '\n' + paylhash;
log.debug('URI String ', canonical_request);
/*************** TASK 2: CREATE THE STRING TO SIGN************* */
var monthStr = (today.getUTCMonth()+1),
dayStr = today.getUTCDate();
var datestamp = today.getUTCFullYear() + '' + (monthStr>9?monthStr:('0'+monthStr)) + '' + (dayStr>9?dayStr:('0'+dayStr));
region = 'eu-west-1';
service = 'execute-api';
algorithm = 'AWS4-HMAC-SHA256';
var canonicalsha256Data = CryptoJS.SHA256(canonical_request);
var canonical_hash = CryptoJS.enc.Hex.stringify(canonicalsha256Data);
//log.debug('canonicalsha256Data is ', canonicalsha256Data);
log.debug('canonical_hash is ', canonical_hash);
credential_scope = datestamp + '/' + region + '/' + 'execute-api' + '/' + 'aws4_request';
string_to_sign = algorithm + '\n' + ISO8601Date + '\n' + credential_scope + '\n' + canonical_hash;
log.debug('String to Sign ', string_to_sign);
/************* TASK 3: CALCULATE THE SIGNATURE *************/
//stsResponse
secret_key = stsResponse.Credentials.SecretAccessKey; //secret key for iam user
access_key = stsResponse.Credentials.AccessKeyId; // access key for iam user
signing_key = getSignatureKey(secret_key, datestamp, region, service);
var signingsha256Data = CryptoJS.HmacSHA256(string_to_sign, signing_key);
var signature = CryptoJS.enc.Hex.stringify(signingsha256Data);
log.debug('Final signature is ', signature);
/************* TASK 4: ADD SIGNING INFORMATION TO THE REQUEST *************/
authorization_header = algorithm + ' ' + 'Credential=' + access_key + '/' + credential_scope + ', ' + 'SignedHeaders=' + signed_headers + ', ' + 'Signature=' + signature;
log.debug('authorization_header is ', authorization_header);
headers = {
'host': 'sellingpartnerapi-eu.amazon.com',
'x-amz-access-token': accessToken,
'X-Amz-Security-Token': secToken,
'x-Amz-Content-Sha256': contenthash,
'x-amz-date': ISO8601Date,
'Authorization': authorization_header,
'Content-Type': 'application/json',
'ACCEPT': '*/*'
}
/************** SEND THE REQUEST **************/
request_url = 'https://sellingpartnerapi-eu.amazon.com'+canonical_uri+'?' + canonical_querystring;
//request_url = 'https://sellingpartnerapi-eu.amazon.com/listings/2021-08-01/items/A3F8NJ8FFYFH4O/ABC123'+'?' + canonical_querystring;
log.debug('Request URL is ', request_url);
var response_end = https.put({
url: request_url,
headers: headers,
body : bodyObj
});
log.debug('Response Code is ', response_end.code);
log.debug('Response is ', response_end.body);
I am getting response as 400 :{ "errors": [ { "code": "InvalidInput", "message": "Invalid Input", "details": "" } ] }
Other questions I have, I am trying to generate payload hash but amazon is expecting different thing, when I replace amazon expected payload it works(hard coded as paylhash in this script) otherwise 403 error
Did anyone came across same issue or if someone can identify what I am doing wrong will be a great help.
