Condition currency &1 earmarked for currency conversion (Please check)

What causes this issue?

The condition currency &V1& has been earmarked since &V4& for
conversion into the currency &V2& (e.g. changeover in connection with
the European Monetary Union).

System Response

If this message has only been issued as a warning, you can save the
rebate arrangement. Otherwise, please choose a different condition
currency (normally this will be &V2&).

How to fix this error?

Please check whether you wish to work in the currency &V1& or &V2& vis-
a-vis the condition granter &V3&.

Error message extract from SAP system. Copyright SAP SE.