Default Payment Failure/Success URLs

[donthecat]

I'm building a Payment Extension.

Is there any default URL which I should forward to in case of a Payment Failure...

I'm pointing to

Code Select Expand

https://myurl/index.php?rt=checkout/success for Successful Payments? Is this right ?

and what parameters do I need to pass to get the status displayed on the Success page.. Right now, I'm getting only Failed even for Live transactions that we have tested. The Payment is debited to the account, the Cart is emptied, but the Status is Failed...