Revision level cannot be created for material &

What causes this issue?

You want to define the change status of material &V1& further by using
a revision level.

System Response

The system checks whether the following indicators are set for the
<LS>object type</> material in the chosen change master record:
RESET N1
<LS>Object management record required for each object</>
<LS>Object management record only generated when you create object</>
RESET N1

How to fix this error?

Process the indicators according to the situation:
<LS>For 1</>
If the <LS>Object management record required for each object</> is not
set, set this indicator.
<ZH>For 2</>
if material &V1& already exists in the system, and the <LS>Generate
obj. mgmt record only when you create object</> is set, the system can
no longer create the object management record automatically.
In this case, you must first create the object management record for
material &V1& in the change master record, then you can assign a
revision level to the material.

Error message extract from SAP system. Copyright SAP SE.