error processing transaction:270 line item 1 inval

I'm using the latest version of HS (2.1.3) on J2.5.11.
We're using the Authorize.net checkout and when we get to the 'review your order' screen in the checkout process (advanced workflow) we're getting the following error:

There was an error while processing your transaction: 270 Line item 1 is invalid.

And the user is just taken back to that same status page whenever you click the next button.

We also have the check payment (and bank transfer) payment plugin enabled.

We are using UPS and manual shipping methods.

We do require login to checkout.

Can't find anything here that is close to this issue.

Any ideas what might be causing this?

It was working fine prior to a switch to a new server a few days ago.


CORRECTION: When pressing the NEXT button after that error is displayed the user is taken back to the Payment step where they have to fill in their CC info again.

Using the Pay by Check method works fine.

Any chance anyone has a solution for this?
We've had to disable the shopping cart and client is getting very frustrated.

I guess I'll have to start debugging code to try to isolate this. Just seems that someone might have run into this before (but can't find anything searching here).

Thanks for those tips; however, these products/prices were working fine before we moved to a new server.

Is there a certain port that the authorize.net hikashop plugin uses?
Just wondering if it might be blocked on the new server.

Just for 'fun' I've tried with another transaction ($15) and with a product that has only letters in the name/code - still same error.

Can you even tell me where this might be coming from?

I also recently updated HS to the latest version - before the upgrade and the server change everything was working fine.

Also, we're using a CDN (Incapsula) as well as some tight HTACCESS security controls (only allowing connection to the server from certain IP addresses - mainly the CDN IPs).
Does authorize.net require a live connection to the server from the auth.net servers?

OK ... finally tracked it down (for anyone else having this issue).

It WAS related to what non-printable ascii codes in the title HOWEVER, Authorize.net (or the HS auth.net payment plugin) somehow interprets " - " (i.e. <space><hyphen><space>) as a non-ascii sequence and that is what was blocking the processing.

I'm not sure exactly how this was working before. But after replacing a couple m-dashes with hyphens and then making sure the spaces around all hyphens were removed, it seems to be working properly.

Thanks for pointing me in the right direction.