Maintain the exchange rate type for version & in &

What causes this issue?

You want to use plan version &V1& with controlling area &V3& in fiscal
year &V2&.
You have not specified an exchange rate type for this plan version for
fiscal year &V2&. Since the update of all currencies in &V2& is active
in the control indicators of the controlling area, currency conversions
are possible and sometimes also needed.
It is therefore necessary to specify an exchange rate type for plan
version &V1& in year &V2&.

System Response

The system will not accept your entry.

How to fix this error?

Please maintain plan version &V1& first using the function
'<DS:TRAN.KP92>Change Plan Version</>', or
correct your typing error.

Error message extract from SAP system. Copyright SAP SE.