Valuation level is not set in Customizing

What causes this issue?

The function required cannot be carried out because the valuation level
has not been set in Customizing.

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?

INCLUDE NA_SYSTVERW1

Procedure for System Administrators

Set the valuation level in Customizing.
<DS:TRAN.OX14>Proceed</>

Error message extract from SAP system. Copyright SAP SE.