Planning of & is not supported in controlling area & in &

What causes this issue?

In controlling area &V2&, it is not planned to keep the data bases in
currencies other than the CO area currency for fiscal year &V3& (see
customizing). However, the selected planning parameter attempts to
plan in transaction currency or in cost center/order currency.

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?

Select a planning parameter which allows cost planning in CO area
currency and not in foreign currencies, or
Correct your typing error

Error message extract from SAP system. Copyright SAP SE.