AbleCommerce Shopping Cart Software

The problem is not related to AbleCommerce - perhaps can get a solution from experienced users here!
I'm trying to use my client's Merchant login info with the PayFlow Pro Test mode.
I've tried many card types with different test card numbers provided by the PayFlow pro API but always getting Failed AVS Check error.
Their login works fine with the Live server.
Are these live accounts not allowed on the test server?

I haven't worked with PayFlow Pro, but other gateways show errors/don't check AVS on test cards/test mode. This straightens out when you use a real card in live mode. There might be a merchant/developer doc that would show what to expect in which mode.

Thanks Judy. For now I just created a dummy gateway for testing the successful -or- failed transactions.