Valuation area does not exist

What causes this issue?

The plant is not allocated to a valuation area.
This may be an error that occurred in the process of allocating the
plant to the valuation area.
IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.

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?

Check the plant/valuation area allocation in the Customizing system of
the company structure.
<DS:SIMG.SIMG_CFMENUSAPCOX18>Proceed</>
ENDIF.

Error message extract from SAP system. Copyright SAP SE.