WSH_CHANGE_SCHED_DATE flagged as error eventhough defined as warning

 We have following issue :

WSH_CHANGE_SCHED_DATE flagged as error eventhough defined as warning for some lines

WSH_CHANGE_SCHED_DATE flagged as warning for some other lines.

WSH_CHANGE_SCHED_DATE  was initially defined as Error and we then changed to warning, however some lines remained flagged as error some other changed to warning.

 Any idea what could be causing this?

Thanks