We cannot convert MYOB files that include multi-currency transactions in the transactional period selected for conversion. If multi-currency has not been used, there may be an opportunity to disable the feature and proceed with the conversion.
You may be able to disable multi-currency if:
There are no foreign currency transactions in the conversion period.
If only a few exist, open each one and convert them to the native currency manually.
There are no balances in any foreign currency accounts.
Check foreign currency accounts for balances. If they are $0, proceed.
Delete unused currencies:
Go to Lists > Currencies.
If deletion is blocked, the currency may be linked to an account (e.g. payables/receivables).
Unlink the relevant accounts and try again.
Change any foreign exchange accounts to native currency (e.g. AUD).
Remove foreign currencies linked to any contacts.
Disable the multi-currency setting:
Uncheck “I deal with multiple currencies.”