Cause
During delivery and transportation scheduling, while attempting tocalculate a date, the system came across an error that preventedscheduling.

System Response
Scheduling is terminated. All dates are set to the start date forscheduling.

Procedure
First check whether the factory calendars for the shippingpoint and the route exist and are valid, and whether the entry dates(order date or material availability date) are within the times definedin both calendars. Then contact SAP because this must involve an errorwhich was not known at the time of programming. Specify the environmentof SD delivery and transportation scheduling as well asthe calendar functions of the SAP library of functions.