CCAvenue Payment Error code 10002
Merchant Authentication failed.
Don’t worry… It happens to the best of us
Go back to http://example.com
This might be due to incorrect value of merchant ID, working_key or access_code. Also make sure if the order originates from the registered URL for which the API keys are issued. i.e if your API Keys are issued for example.com then they will work only for example.com. You need to contact CCAvenue to get API Keys for new domain.
Look for the URL coming next to Go back to < > the keys work for that domain only