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DEFINE HERE Each period close rule includes an accounting date rule used to assign an accounting date to a transaction, along with an accounting date rule used to assign an accounting date to a transaction in the event that the accounting period for the date identified by the initial rule is closed or does not exist.
The system applies the period close rules to transactions that have message types of MTOPEN, MTCLOSE, and MTLINK. By default, it applies a period close rule of ???????? (no longer = latest open period) to transactions for other message types, such as MTCANCEL and MTCASH.
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