Unauthorized Issue in invoking REST API

Hi,
I am getting the following issue when i am calling the "GET" method of REST API:" https://secure.p03.eloqua.com/API/bulk/2.0/syncs/14"
Unauthorized
java.lang.RuntimeException: Failed : HTTP error code : 401
at GetContactSync.main(GetContactSync.java:41)
This is the code i have used to invoke the API:
String proxyhost="www-proxy.us.oracle.com";
int proxyport=80;
String inputparam="14";
    String urlstring="https://secure.p03.eloqua.com/API/bulk/2.0/syncs/14";
   String authString = "IBUDEMO\\aman.adarsh" + ":" + "Welcome@1";
//String authString = "IBUDEMO1\\aman.adarsh" + ":" + "Welcome@1";
   String authToken = "Basic" + javax.xml.bind.DatatypeConverter.printBase64Binary(authString.getBytes());
   String output="";
   String line="";
URL url = new URL(urlstring);
//Properties systemProperties = System.getProperties();
//systemProperties.setProperty("http.proxyHost",proxyhost);
HttpURLConnection conn = (HttpURLConnection) url.openConnection(new Proxy(Type.HTTP,new InetSocketAddress(proxyhost, proxyport)));
conn.setInstanceFollowRedirects(false);
conn.setDoOutput(true);
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
//conn.setRequestProperty("Authorization", authToken);
conn.setRequestProperty("Proxy-Authorization", "Basic " + authToken);
System.out.println(conn.getResponseMessage());
if (conn.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " +
                                       conn.getResponseCode());
I want to know if i have missed any parameter
The same authentication piece of code is working fine for "POST" methods of other API's
Request your help on this

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property, IEdmStructuredType owningType, Boolean isTopLevel, Boolean isWritingCollection, Action beforePropertyAction, EpmValueCache epmValueCache, EpmSourcePathSegment epmParentSourcePathSegment, DuplicatePropertyNamesChecker duplicatePropertyNamesChecker,
ProjectedPropertiesAnnotation projectedProperties) at Microsoft.Data.OData.Atom.ODataAtomPropertyAndValueSerializer.WriteProperties(IEdmStructuredType owningType, IEnumerable`1 cachedProperties, Boolean isWritingCollection, Action beforePropertie...
...sAction, Action afterPropertiesAction, DuplicatePropertyNamesChecker duplicatePropertyNamesChecker, EpmValueCache epmValueCache, EpmSourcePathSegment epmSourcePathSegment, ProjectedPropertiesAnnotation projectedProperties) at Microsoft.Data.OData.Atom.ODataAtomPropertyAndValueSerializer.WriteComplexValue(ODataComplexValue
complexValue, IEdmTypeReference metadataTypeReference, Boolean isOpenPropertyType, Boolean isWritingCollection, Action beforeValueAction, Action afterValueAction, DuplicatePropertyNamesChecker duplicatePropertyNamesChecker, CollectionWithoutExpectedTypeValidator
collectionValidator, EpmValueCache epmValueCache, EpmSourcePathSegment epmSourcePathSegment, ProjectedPropertiesAnnotation projectedProperties) at Microsoft.Data.OData.Atom.ODataAtomPropertyAndValueSeriali...
...zer.WriteCollectionValue(ODataCollectionValue collectionValue, IEdmTypeReference propertyTypeReference, Boolean isOpenPropertyType, Boolean isWritingCollection) at Microsoft.Data.OData.Atom.ODataAtomPropertyAndValueSerializer.WriteProperty(ODataProperty
property, IEdmStructuredType owningType, Boolean isTopLevel, Boolean isWritingCollection, Action beforePropertyAction, EpmValueCache epmValueCache, EpmSourcePathSegment epmParentSourcePathSegment, DuplicatePropertyNamesChecker duplicatePropertyNamesChecker,
ProjectedPropertiesAnnotation projectedProperties) at Microsoft.Data.OData.Atom.ODataAtomPropertyAndValueSerializer.WriteProperties(IEdmStructuredType owningType, IEnumerable`1 cachedProperties, Boolean isWritingCollection, Action beforePropertiesAction,
Action afterPropertiesAct...
Can anyone please help me out.
Thanks!
dinesh

O365,
Is this still an issue?
Thanks!
Ed Price, Azure & Power BI Customer Program Manager (Blog,
Small Basic,
Wiki Ninjas,
Wiki)
Answer an interesting question?
Create a wiki article about it!

Getting error while uploading multiple files in sharepoint hosted app in 2013 with REST API

Hi All,
In one of my tasks, I was struck with one issue, that is "While uploading multiple files into custom list with REST API".
Iam trying to upload multiple files in library with REST calls for an APP development, my issue is if i wants to upload 4 image at once its storing only
3 image file and further giving "Conflict" error". Below is the attached screenshot of exact error.
Error within screenshot are : status Code : 409
status Text :conflict
For this operation i am uploading different files as an attachment to an list item, below is the code used for uploading multiple files.
my code is
function PerformUpload(listName, fileName, listItem, fileData)
var urlOfAttachment="";
// var itemId = listItem.get_id();
urlOfAttachment = appWebUrl + "/_api/web/lists/GetByTitle('" + listName + "')/items(" + listItem + ")/AttachmentFiles/add(FileName='" + fileName + "')"
// use the request executor (cross domain library) to perform the upload
var reqExecutor = new SP.RequestExecutor(appWebUrl);
reqExecutor.executeAsync({
url: urlOfAttachment,
method: "POST",
headers: {
"Accept": "application/json; odata=verbose",
"X-RequestDigest": digest
contentType: "application/json;odata=verbose",
binaryStringRequestBody: true,
body: fileData,
success: function (x, y, z) {
alert("Success!");
error: function (x, y, z) {
alert(z);

Hi,
THis is common issue if your file size exceeds
upload a document of size more than 1mb. worksss well for kb files.
https://social.technet.microsoft.com/Forums/office/en-US/b888ac78-eb4e-4653-b69d-1917c84cc777/getting-error-while-uploading-multiple-files-in-sharepoint-hosted-app-in-2013-with-rest-api?forum=sharepointdevelopment
or try the below method
https://social.technet.microsoft.com/Forums/office/en-US/40b0cb04-1fbb-4639-96f3-a95fe3bdbd78/upload-files-using-rest-api-in-sharepoint-2013?forum=sharepointdevelopment
Please remember to click 'Mark as Answer' on the answer if it helps you

Unauthorized Issue in invoking REST API

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