Source currency type &3 for currency type &2 does not exist in CoCo &1

What causes this issue?

In company code &V1& currency type &V2& is to be calculated from
currency type &V3&. Currency type &V3& however doesn't exist in the
currency conversion settings for company code &V1&.

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?

Consider using another source currency type, or enter currency type &V3&
in the currency conversion settings for company code &V1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.