delivery scheduling

[Former Member]

Hi

Why is delivery scheduling carried out after the availability check, if the item cannot be confirmed for the required delivery date at time of sales order creation.

thanks

[Former Member]

Hi,

When we create a sales order, there are several basic functions which are executed automatically for the dynamic order management . among these basic functions , availability check and transfer of requirements are crucial.

the system first prepares schedule line containing the information on the desired delivery date and quantities , this information is passed to MRP and an avialability check and transfer of requiremnts are executed

First the system carries out backward scheduling and establishes the material avaialbility date = desired delivery date-transit time-loading time-picking & packing time and on this date an availability check is carried out using ATP logic which means avialable to promise quanity =total ware house stock+incoing orders-outgoing

along with the avialability check the requirements also are transferred to MRP.

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

By default, the system will calculate delivery dates the closest day, taking into consideration the working days of the shipping point and a rounding profile. In this case the system assumes a 24 hour work day and lead times can be entered in days up to 2 decimal points. This is referred to as daily scheduling.

Precise scheduling calculated down to the day, hour and minute is supported. This allows the scheduling of a delivery within a single day. It is activated by maintaining the working hours for a particular shipping point.

Backward scheduling is always carried out first. If the material availability date or transportation scheduling date is calculated to be in the past, the system must then use forward scheduling.

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.

Reward points if helpful.

Regards,

Vinod Palli

Edited by: Vinod Palli on May 29, 2008 7:20 PM

[Former Member]

If the item could not be confirmed for the required delivery date, then the system carries out delivery scheduling from the earliest possible date available (forward scheduling), in order to determine the delivery date (confirmation date).