Each encounter, payment and adjustment is required to be associated with a Posting Period. The naming convention of a Posting Period must be xxxxxx (4 digit year and 2 digit month. A Posting Period will contain closed encounter batches and closed payment/adjustment batches. Once all encounters and transactions have been entered for a given Posting Period, the period will then be closed by the practice. Once closed, a Posting Period may not be reopened. A Posting Period may remain open for the practice as long as deemed necessary; however the Posting Period is directly linked to Trial and Final Reporting within the MBSWin system.