Begin Date

This field identifies a begin date for a particular Accrual Plan.  This date will reflect the beginning date of the first accrual period for which you plan on posting accrued amounts.  

Once an accrual plan has been used in any posting of accrual amounts, this date can no longer be modified.  

Note that if you select a Semi-Monthly period type, you will also need to supply an additional date (Mid-Month Begin Date).  This is typically the 16th of the month.