Hi,

While calling out other system's webservices from salesforce org. This 401 invalid seesion id  error is being prompted. Even though i had mentioned Username and password in header of HttpRequest. Is there any workaround to fix it.

Code snippet has been attached below.


Http h = new Http();
Httprequest request = new Httprequest();
request.setEndpoint('https://ap2.salesforce.com/services/apexrest/Accounts/0012800000XNqPO/contacts');
request.setMethod('GET');
String username = 'xxxxx';
String password = 'xxxx';
Blob headerValue = Blob.valueOf(username + ':' + password);
String authorizationHeader = 'Basic ' + EncodingUtil.base64Encode(headerValue);
request.setHeader('Authorization', authorizationHeader);
Httpresponse response = h.send(request);
System.debug(response.getBody());



Any help, would be appreciate.

Thanks,
Abhi