prevent editing for non posting transactions in a closed period

AI generated answer (using internal Slack threads):

****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ****** To prevent editing for non-posting transactions in a closed period, you need to understand the difference between a locked period and a closed period in NetSuite. During the month-end process, AR and AP are locked first. This prevents users from making transactions such as invoices and bills to that period. However, users with the 'Override Period Restrictions' permission can still change non-GL impacting fields like description or other non-posting fields. Once the month-end process is complete, the period is finally closed. At this point, no transactions can be made in those periods, unless the period is reopened. Even users with the 'Override Period Restrictions' permission cannot make general ledger impacting changes to posting transactions in a closed period. If you find that users are still able to perform transactions in a closed period, ensure that the period is fully closed and not just locked. Also, check if the transactions being made are GL posting transactions. If the period is indeed closed and the transactions are non-posting, then it might be worth investigating further as this should not be possible according to NetSuite's documentation. Remember, the 'Override Period Restrictions' permission allows users to add and edit posting transactions even if the transaction type has been locked for a period. However, no one can make general ledger impacting changes to posting transactions in a closed period. The period must be reopened before these changes can be posted.