Auth.net SIM currency other than default receives "Not allowed" error

[RixStix]

zc 1.5.4
php 5.5.30
mySQL 5.6.27
ZC auth.net SIM module

Auth.net SIM returns an error message when a currency (CAD, AUD, GBP or Euro) other than default is being used within zencart.

For some reason, I understood that zencart transmitted default currency to auth.net regardless of chosen currency.
Has something changed? I don't recall customers having problems with currency issues in the past when choosing to pay via credit card, though most International customers use the default.

The only debug file is what was transmitted TO Auth.net. Nothing is being transmitted back from Auth.net. The error is being presented in the Auth.net payment screen.

[RixStix]

Just finished with Auth.net support and they say the transaction must come from zencart in the default currency of my merchant account which is USD.

[DrByte]

Around line 385 in your SIM module code, you'll see a line like this:

    if (!in_array($order->info['currency'], array('USD', 'CAD', 'GBP', 'EUR', 'AUD', 'NZD', $this->gateway_currency))) {

I believe changing it to look like this should solve your problem:

    if (!in_array($order->info['currency'], array('USD', $this->gateway_currency))) {

[RixStix]

Thank you DrByte,

Tested with currency = CAD within zc. Currency appeared as USD in Auth.net. Processed by auth.net in USD. ZC order is in CAD.
That might be confusing to customers whose order appears in a currency other than default, but at least the transaction is processed without error.

Have coffee & donuts on me

[DrByte]

I believe I have a much more reliable fix ... which I've posted here: https://github.com/zencart/zencart/pull/720 ... and will be rolled into v1.5.5.