Forward and Backward Scheduling

forward scheduling and backward scheduling is automatically done by the system to propose requested delivery date it will done when avaliabity check carries, to carry F/B scheduling avaliabity check config settings r to bem made properly.

as per system version it will first goes to backward scheduling,

system comapares the delevary date with "pld dly time and gr processing time and transportation lead time and pur.,dept processing time" if the delivery date is in between these dates system propes the delivery date, if delivery date is in the past then the system goes for forward scheduling and then considers "pld dly time and gr processing time and pur.,dept processing time" and proposes delivery date.

Edited by: kishore gopala on Jan 9, 2008 7:52 AM

hi,

u need to define the sales order types which will be eligle to this. as much as i understand the system does frwrd sched by default. also u need to define the lead times for the shipping points. follow the path -img -sales and dist -basic func --del and trans scheduling.

saurabh

Hi,

A routing can be scheduled using the following scheduling types:

Forward scheduling: The system schedules forward starting from the basic start date.

Backward scheduling: The system schedules backward starting from the basic finish date.

"today" scheduling: The system carries out forward scheduling using the current date as a basic start date.

no scheduling: The individual operations are not scheduled.

Based on the floats before and after production, the system calculates the scheduled start and finish and enters these dates in all operations.

The scheduling type determines which basic dates you have to enter. The following table shows the dates you must enter for the individual scheduling types as well as the dates that are then calculated using scheduling.

If you enter both basic dates, the system will make sure that the dates determined using forward or backward scheduling are within the specified period. If necessary, it will apply reduction measures.

Example Data

Material shortage date

01.08 (Friday)

Planned delivery time of the material

10 days (calendar days)

Processing time for purchasing

1 day (workdays)

Goods receipt processing time

2 days (workdays)

Opening period

10 days (workdays)

Workdays = Monday to Friday, no bank holiday

Scheduling

Material shortage date plus processing time for purchasing plan plus planned delivery time = delivery date

01.08. (Friday) plus 1 workday + 10 calendar days = 14.08. (Thursday)

Delivery date plus goods receipt processing time = availability date

14.08. (Thursday) plus 2 workdays = 18.08. (Monday)

regards,

Siddharth.