Selling period must be within usability period

What causes this issue?

The selling period for a material must be within the material's defined
usability period because the material could otherwise be ordered by
customers, even though it has been flagged as not to be used.

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.