Diagnosis
The system could not delete all the schedule lines for item &V1&. Ifthe schedule line is linked to a procurement element (purchaserequisistion or assembly order) this could be because the procumentelement cannot be deleted.
A purchase requisition can have a release status that prevents it frombeing deleted. For example, an assembly order cannot be deleted if itis partially or completely confirmed.
This message also appears if the system stops deleting in the SDdocument.

Procedure
You can try to change the procurement element in the detail screen forschedule line procurement so that the schedule line can be deleted. Ifthis doesn't work, inform the purchasing or production planningdepartment.