Multiple billings for one user in one day for Monthly Recurring (Drupal commerce) Our Monthly Recurring Billing has been working successfully for more than 1 year. However, there are two customers are charged multiple times on February 28, 2018, once an hour.&nbsp; Other 3 customers (monthly recurring) are charged correctly&nbsp;on the same day.

The cron "commerce_recurring_cron" runs every hour, and created a new order of recurring billing for the same user. 


ORDER NUMBER    UPDATED NAME    USER    TOTAL   ORDER STATUS
8181    February 28, 2018 - 6:43pm  J* C*   j*  $4.99   Completed
8182    February 28, 2018 - 7:09pm  J* C*   j*  $4.99   Completed
8184    February 28, 2018 - 8:09pm  J* C*   j*  $4.99   Completed
8186    February 28, 2018 - 9:11pm  J* C*   j*  $4.99   Completed
8188    February 28, 2018 - 10:11pm J* C*   j*  $4.99   Completed
8190    February 28, 2018 - 11:00pm J* C*   j*  $4.99   Completed
8192    March 1, 2018 - 12:00am J* C*   j*  $4.99   Completed
8183    February 28, 2018 - 8:09pm  L* L*   l*  $4.99   Completed
8185    February 28, 2018 - 9:11pm  L* L*   l*  $4.99   Completed
8187    February 28, 2018 - 10:11pm L* L*   l*  $4.99   Completed
8189    February 28, 2018 - 11:00pm L* L*   l*  $4.99   Completed
8191    March 1, 2018 - 12:00am L* L*   l*  $4.99   Completed


All above payments of orders&nbsp;are charge successfully in Authorize.net.&nbsp;

System: Drupal 7.56; Authorize.net Gate Way.&nbsp;
Related modules:&nbsp;commerce 7.x-1.13, commerce_recurring 7.x-2.x-dev, commerce_order 7.x-1.11, commerce_payment 7.x-1.11, commerce_authnet 7.x-1.4,&nbsp;commerce_cardonfile 7.x-2.0-beta5+3-dev.

I have spent days on doing&nbsp;research,&nbsp; and debugging&nbsp;the Drupal log and system log.&nbsp;&nbsp;But I can't find any useful info.&nbsp;
I cannot repeat the problem on our DEV site.&nbsp;&nbsp;

I will deeply appreciate it if someone knows some clues about it by chance.

Thank you very much!
There is a fixed issue with Commerce Authorize.Net, discussed on https://www.drupal.org/project/commerce_authnet/issues/2161989. 

If your setup already incorporates that fix, then most probably it is hitting the issue Duplicate queue items should not be created. Apply the patch in #6 and you should be fine.