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https://support.authorize.net/authkb/index?page=content&id=A1454&actp=LIST Hello, We're using the PHP AIM SDK for Authorize.net and have this working fine for USA & Canadian based processors, however, I'm having trouble with my first Australian proce...

Hello, I'm looking for advice/solutions in handling an AIM Implementation of Authorize.net using PHP for "Duplicate Transaction Submitted" protection, but not overprotection. While I definitely want to avoid illegitimate charges being permitted from ...