Transaction currency & has been transferred from controlling area &

What causes this issue?

Data entry in the controlling document takes place in a transaction
currency which you may set within the transaction, the list screen, or
the detail screen. Currency &V1& in controlling area &V2& is used here
as the default currrency, as long as user parameter FWB is not set as
the default.

System Response

Changing the currency within the transaction is possible only as long
as no document items have yet been entered.
For a permanent currency change for transaction-based actual postings,
a user default can be set.

How to fix this error?

To enter data in another transaction currency, enter the desired
currency in the "Transaction currency" field. This currency will then
be used during logon as a parameter for transaction-based actual
postings.
If you have already entered items, backdate the document, or delete the
items, in order to allow entry in the "Transaction currency" field.
User parameter FWB is used for the currency as the user default.

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