Select on Reconcile orders from the main screen see below





Enter your start/end date and select on RECONCILE.  Then select one of the following from the bottom


All Calls/Successful Calls - This will show all Calls that have been synced successfully


Failed Calls - This will show calls that failed to sync.  In this situation you need to RESEND each of these by holding down on each call and selecting RESEND ORDER


Once you have done this, select on SYNC to resend the Calls.