Material & not subject to manufacturer part number management

What causes this issue?

You wanted to maintain the
<DS:GLOS.approved_manufacturer_parts_list>approved manufacturer parts
list</> (AMPL) for one of your firm's own, inventory-managed materials
to which no <DS:GLOS.material_for_manufacturer_part_number>MPN
materials</> have been assigned or which does not contain a
manufacturer part profile that provides for the maintenance of this
list.

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?

Enter a material that satisfies the above conditions.

Error message extract from SAP system. Copyright SAP SE.