Factor change: Exchange rate type &1 is not automatically rerouted

What causes this issue?

You have changed a few exchange rate factors (for exchange rate type
&v1&) for a date that lies either ahead of the 01.01.1999 or ahead of
the current date.

System Response

The assistant does not enable you to reroute these type of exchange
rate types.

How to fix this error?

Make the necessary euro settings for the exchange rate type &v1&
manually.

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.