What is "DaysBookingOffset" param in pipeline DAT_Discount module?

Hi,

We have this parameter in our Pipeline registry but we don't know why. I searched in the documentation but I didn't found anything.

This is our configuration:

DiscountModelDataModule

    {

      ModuleName = DAT_Discount

      Module

      {

  DataConnection = ifw.DataPool.Login

        InfranetConnection  = ifw.DataPool.LoginInfranet

        IntegrateConnection = ifw.DataPool.Login

        AccountDataModule   = ifw.DataPool.CustomerData

        PortalConfigDataModule = ifw.DataPool.PortalConfigDataModule

        RolloverMonthsMax = 3  # optional default 42

        Accounts

        {

          ArchiveDirectory = ${IFW_HOME}/ice_custom/data/discount/archive

          WorkDirectory    = ${IFW_HOME}/ice_custom/data/discount/work

          BalanceDirectory = ${IFW_HOME}/ice_custom/data/discount/balance

          ChargePrecision  = 5 # optional default 5

          RoundingMethod   = PLAIN # UP DOWN BANKERS PLAIN

          Booking          = Billrun

          Monthly

          {

            DaysBookingOffset = -5

          }

          Billrun

          {

           InfranetDataModule = ifw.DataPool.CustomerData