I downloaded the sample code to request a rate from fedex\'s website... i placed the WSDL file in the proper location, I have my acct number, password, meter number, and key. Wh
I faced this issue from earlier and found solution finally after a discussion with FedEx Technical Person.See why we are facing such error all because of Developer Test Account we generated from developer website.One thing we should keep in mind that Test Account Number start with "6" is of Production & Key Start with "5" is Correct Test Key.So Please check your Test Key when you get Authentication problem with Error Code 1000.
Another Reason apart from this is might be your Fedex Webservice endpoint is different like for ex "https://wsbeta.fedex.com/web-services/track", this is Sandbox mode url and in production environment url should be like this "https://ws.fedex.com/web-services/track". There is no "beta" mode in URL for Production,So please check endpoint.