Valuation area &1 requires a method of type "always valuate"

What causes this issue?

You have defined a valuation area for use as an inception run.

System Response

Error, since the valuation method used is not of the type "always
remeasure".

How to fix this error?

If you want to set up a valuation area for an inception run, you need to
use a valuation method with the type "always remeasure". An inception
run is used to create initial values for non-realtime currencies.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.