Every time I send an on demand extraction request, I get a 404 response. Any help would be appreciated. Thank you.
I've formatted the request as below:
method: 
POST
URL:
https://hosted.datascopeapi.reuters.com/RestApi/v1/Extractions/ExtractWithNotes 
header 
{
    'Authorization': u'Token <token>',
    'Content-Type': 'application/json',
    'Prefer': 'respond-async'
} 
content 
{
    '@data.type': '#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.CompositeExtractionRequest',
    'ContentFieldNames': [
        'RIC', 
        'CUSIP'],
    'IdentifierList': {
        '@data.type': 'ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList',
        'InstrumentIdentifiers': [
            {
                'Identifier': 'IBM.N',
                'IdentifierType': 'Ric'
            },
            {
                'Identifier': 'AAPL.O',
                'IdentifierType': 'Ric'
            }
        ],
        'UseUserPreferencesForValidationOptions': 'false',
        'ValidationOptions': 'null'}
}