Just be prepared, its going to happen a lot during the Holidays.
Scheduling errors happened to me about once a week for 3 months during a time when I had lacking in performance ETL-HR. Its annoying as hell when the LOD calls and starts yelling on why I wasn't at work. Then I calmly tell him the posted schedule has me off for the day. But I never go a Sorry.
Since I lived close to my store, I would drive over to confirm that I was right and put it back on the LOD. Then I made it a point to inform my STL that it was continuing issue, and I should not be penalized.
Usually the LOD or ETL-HR will note the missed shift as a scheduling error, or change the schedule to have me off. And the NCNS is supposed to be voided.
To me, how hard is it to print out a new schedule whenever its edited. I was always told off updated schedules at my other stores.
In my opinion if the posted schedule and the computer schedule are different, the TM needs to paid for the missed hours.