What is causing this Error?

This error can occur for several reasons:

The POS Terminal received the online order, but the ticket exceeded the order confirmation timeframe.
Location Network disruption/sync issues when the order has been sent.

How do I resolve this Error?

Ensure the location is configured to automatically complete paid fulfilled orders. For more information, refer to the Enable Auto-Complete for 3rd Party Orders on SkyTab Online Ordering article.
If the issue persists, it is confirmed that the root cause of this issue occurring is network disruption/sync issues. Restart the network (ISP Modem & TP-Link router). Additionally, ensure POS Terminals Date & time and time zone settings are configured correctly. For more information, refer to the Configure the Date & Time and Timezone for SkyTab POS Workstation Install article.
If the ticket was processed using SkyTab Online or QR Pay integration, confirm the payment status in LBM or LTM. If the transaction comes out as void, refer to the Clone Transaction on Lighthouse Business Manager article or Duplicate or Reprocess Transactions in Lighthouse Transaction Manager (United States) article, depending on the platform used to reprocess the transaction.
If the ticket was processed using 3rd party integration (DoorDash, Uber Eats, etc.), contact their support to confirm the transaction status since it will be processed using a 3rd party gateway.

The expired order will disappear from POS Terminals after End of Day.