MRP area flagged for deletion

What causes this issue?

MRP area has been flagged for deletion. Deletion indicator has been
set.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You can deactivate this MRP area for a while by setting the deletion
indicator or reorganizing the MRP area data concerned (archiving
object: MM_MATNR).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.