this mrng Oct 2, 2013, I just open the periods in AX. (normally we open the period every 2nd working day of the month) .Yesterday, Oct 1, 2013 someone in production department posted transaction in Oct 2013. Previously, NO ONE can post transaction to a period that is still closed. Question: How come that someone can able to post transaction to a closed period? how can I track who open the October 2013 period?