Sometimes while processing a transaction in Point of Sale 2013 the system locks up or freezes, but the transaction still gets processed.
This issue has been resolved. Please update your Point of Sale 2013 to the latest release. For more information on how to update your software, click here.
If this solution does not resolve the issue, you can read discussions and post messages and questions relating to your issue on the QuickBooks Point of Sale Community Forum. You can also review other available support options for additional guidance.