Authorize.net error

[madchas]

I guess you didn't actually read the post

[llegrand]

actually  I did read them -  that's where I got your error code.  But seemed to me that there is always the possibility  that the new site with the issue may be configured differently than your other site.   I am assuming it is also an AbanteCart -  but you didn't specify

I have many clients using Authorize net without issue,  so am assuming something within your settings or site is not correct yet.
Good Luck
I will not waste my time or yours further in try to assist

[madchas]

Is this warning a concern or is it normal?

9101::App Warning
Extension default_authorizenet overrides core template with responses/default_authorizenet.tpl in /home/******/public_html/core/engine/view.php on line 342

[Basara]

It is normal debug info