Diagnosis
You want to change the valid-from date of a change master.
You cannot do this, because the consistency of at least one changeobject (for example, BOM, or routing) is violated or the object(s) arecurrently locked.
The following reasons for inconsistency may apply:

• A BOM has already been changed using a change number with the same
valid-from date as the selected date &V1&.

• A routing is not valid on the selected date &V1&.

System Response
The system produces a message log listing the change objects thatprevent a date shift.

Procedure
If you confirm this message, you can enter a new date in the Dateshift dialog box or cancel the date shift function.
If you cancel the date shift function, you see a pushbutton for thespecial message log for the change objects that prevent a date shift.