Auth.net completed transactions showing as Pending (Incomplete Transaction) - sometimes

Question

CiviCRM: 4.7.17 Joomla 3.6.5

This does not happen every time, seems random. New Member Online registration - Contribution goes through to Auth.Net and is marked there as successful/completed, but the contribution record in Civi is marked as Pending (Incomplete Transaction) and the Membership stays in the status of pending. Following is an example of what I find in the civi error logs each time this occurs. Could somebody help me determine what the cause of this could be?

Log 1:

Apr 10 15:28:31 [info] Contribution record updated successfully

Apr 10 15:28:35 [info] Receipt sent

Apr 10 15:28:35 [info] Success: Database updated

Log 2:

Apr 10 15:28:31 [info] Could not find an entry for x_subscription_id

Apr 10 15:28:31 [info] $error data = Array (

[error_code] => 0

)

Apr 10 15:28:31 [info] $REQUEST = Array (

[x_response_code] => 1

[x_response_reason_code] => 1

[x_response_reason_text] => This transaction has been approved.

[x_avs_code] => Y

...

)

Answer 1

There were some issues with Authorize.net transactions failing due it not managing to send an email- could that be related? Is email always required on the page? I think there are a.net fixes in both 4.7.18 & 4.7.19 (still in rc) so it might be worth checking if a point upgrade changes anything (4.7.19 is due out first Wed next month)