At least two deletion flags are set

What causes this issue?

The material has been flagged for deletion at more than one level.
However, you can still change your data as required.
Note
You can display and, if required, cancel the deletion flags that have
been set for the material. This requires you to exit <LS>Change</> mode
(so that the material is no longer locked) and to choose <LS>Material
</> -> <LS>Flag for deletion</> (transaction MM06). On the screen that
appears, enter the material number, and the organizational levels as
required, and choose <LS>Enter</>.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.