SAP Message 29291 - There are certain items that remain valid after the deletion date &

Diagnosis
You want to delete a BOM on a key date. However, items already existthat are valid after this key date.

System Response
The system deletes the entire BOM.

Procedure
If you want to delete the BOM, select Enter.
If you do not want to delete the BOM, select Cancel (
Esc-button).