Diagnosis
You want to allocate an object (for example, a BOM) to an alternativedate.
This allocation changes the sequence of the effectivity periods.

System Response
The system

• locks the object (for example, BOM)


• checks whether the object is still consistent

The consistency of the object is violated if, for example the object(such as BOM) has already been changed with a change number whosevalid-from date is the same as the alternative date to which you wantto allocate the object.

Procedure
Check whether another user is processing the object.
You cannot allocate the object to the alternative date if this wouldviolate the consistency of the object.