CCavenue payment

-- Joomla version -- : 3
-- Error-message(debug-mod must be tuned on) -- : CCAvenue Transaction Error Page

Error Code:
Error Description:

I integrated ccavenue payment in my store during checkout when I selected ccavenue and give finish I am getting error message as

CCAvenue Transaction Error Page

Error Code:
Error Description:

what should I do to resolve this.. Thanks in advance