(99) this transaction cannot be accepted on Authorize.net SIM

Quote:

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Originally Posted by DrByte

It's possible that your server's time is off, or time zone is not calculating correctly, and therefore you may have to explicitly set it, by setting it in the file you quoted:

Code:

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  // put your timezone here. Refer to http://www.php.net/manual/en/timezones.php
  $TZ = 'PUT_YOUR_TIMEZONE_HERE';  // eg: 'Europe/Oslo'

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Thank you for info. I contacted authorize.net last week and they are looking into this issue. They had huge tech issue last week which may caused this issue too.
Meanwhile if customer card get declined, it will load checkout page of site with out any css.
So I switched to Authorize.net AIM on both sites by apply one ssl and using it for now.