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Fixed currency is only required on Bank Accounts - all transactions will be required to be in the set currency.  There is no other reason to fix currency

Currency can only be fixed to a non base currency (different to the currency of your Host Company) before transactions have been attached.

After transactions can be attached - you can only set the currency to the base currency of your host company if it was not previously fixed. 

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Special Types

These flags are used by the system to filter information in processes or reports.

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