https://userapps.support.sap.com/sap/support/knowledge/en/2009633
2009633 - Error SQL247 "Arithmetic overflow during explicit conversion..." during scheduling an...
Add a new job with scheduled time during schedule an action . Arithmetic overflow error is raised: FATAL ERROR: Exception CX_DB6_CALENDAR_ACTION in class...
errorarithmeticoverflowexplicitconversion