Forward and Backward Scheduling

I have a couple of related questions.
1. Where can I configure if I want Forward/Backward Scheduling in Customization? and if I leave it blank will it do forward or backward scheduling?
2. Does the system not perform backward scheduling if Replenishment Lead Time (RLT) is setup? If yes why?

Hi,
Backward scheduling is the calculation of deadline dates: the arrival time at the customer site is calculated as the earliest
possible goods receipt time at the customers unloading point on the requested delivery date. All four of the delivery and
transportation scheduling lead times are subtracted from the customeru2019s requested delivery date to determine if this date can
be met.
The transit time, loading time, and pick/pack time are subtracted from the customeru2019s requested delivery date to calculate the
required material availability date.
The system calculates backward scheduling as follows:
Requested delivery date minus transit time  = Goods issue date
Goods issue date minus loading time = Loading date
Loading date minus transportation lead time = Transportation scheduling date
Loading date minus pick/pack time = Material availability date
Forward scheduling is also done if no product is available on the material availability date calculated by backward
scheduling. The system does an availability check to determine the first possible date when product will be available. This
new material availability date forms the starting point for scheduling the remaining activities.  The loading time, pick/pack time,
transit time, and transportation lead time are added to the new material availability date to calculate the confirmed delivery
date.      
Regards
Ram

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