Operations are not scheduled correctly

Question

Hello All,
Need your Help.
We are facing issue on on operation scheduling between R/3 & APO.  Before migrating to APO, a operation use to get schedule in 10 days whereas after migrating same part to APO , same operation takes aprox 15 days time.
Here is details.
In R/3: workcenter availbility is 20 hours per day & standard values in routing are
maintained in days = 10 days.
R/3 considered  does not consider  20 hours per day of availability & schedule operation for 10 days @ 24 hour per days .(Assume all are work days as per work center calender). Example, It will schedule from October 1st to October 10th.
IN APO:  APO consider 10 days = 10 X 24 hours = 240 hours then check work center availability of 20 hours per days & schedules  = 240/20 = 12 days rather than 10 days.
APO is scheduling planned orders based on the workcenter availbility & required days whereas R/3 schedules it based on 24 hour workcenter availbility. This inconsistancy is causing early procurement of raw materials aprox 2-3 months in whole supply chain
Does any one face this situation & any thought?
We have following possible options:
a) Maintain standard values in hours rather than days.
b) Change the standard value calculation through BADI in CIF model.
Any more thoughts & help?
Regards...Sanjay

Answer 1

Hi Sanjay,
We have same scenario running in production and we have not faced any problem. I will suggest following things.
1. Mention times in hours instead of days- though my opinion is this maynot have any impact.
2. Check in R/3 whether formula in capacity and schduling veiw is same.
3. First check R/3 Routing and APO PPM/PDS whether time calculated for set up process are exactly matching R/3 and APO.
Please revert if this doesnot sloves problem
Regards,
Santosh