I'm implementing aсtive_shipping plugin functionality in my app. I've got test account from fedex and trying to get some shipping rates as shown in plugin's readme at github:
fedex = FedEx.new(:login => '***', :password => '***', :key => '***',
:account => '510087569', :meter => '100054531')
response = fedex.find_rates(origin, destination, packages)
This request causes an error: ActiveMerchant::Shipping::ResponseError (ERROR - 1000: Authentication Failed)
Also I'm confused with all that APIs keys (DHL, UPS etc). Can I use same account keys in different apps for each of carriers or should I make new ones for every app?
You should pass :test => true in with your other options to let it know to use the test URL rather than the production URL.
You can see all the options and details here
In particular, make sure your other options are these:
# :key is your developer API key
# :password is your API password
# :account is your FedEx account number
# :login is your meter number