Hi SAP Expert,
> We're using multi-level BOM. So, to produce a finished goods, we might have several Production Orders created.
> Sample BOM as below:
.1 SFG B
..2 SFG C
..3 SFG D
Based on the Multilevel BOM above, 4 Production Orders will be created:
FG A (Production Order A)
.1 SFG B (Production Order B)
..2 SFG C (Production Order C)
..3 SFG D (Production Order D)
> When we perform detailed scheduling run using standard SAP heuristics (Enhanced Backward Scheduling, follow by Stable Forward Scheduling), the APO will schedule the Production Order A, B, C & D back to back. By using the sample given above, APO scheduling result as below:
Production Order Start Date End Date
Production Order D 15.04.2011 (8:00) 16.04.2011 (8:00)
Production Order C 16.04.2011 (8:00) 17.04.2011 (10:00)
Production Order B 17.04.2011 (10:00) 18.04.2011 (8:00)
Production Order A 18.04.2011 (8:00) 19.04.2011 (7:00)
> Production Order C can be started earlier (before End Time of Production Order D) once certain send-ahead quantity of Production Order D is completed.
1. Is the business requirement (order overlapping) is possible in APO?
2. If it's possible, how to configure or what master data needs to be set so that the APO will schedule the order overlapping based on the send-ahead qty set by the user?
3. Currently, we re-schedule the order manually in Detailed Scheduling board by drag and drop the order so that the Production Order C starts before the Production Order D is ended. But, when we do this manually, the subsequence order B & A will not re-schedule to the earlier date by the system automatically. We still need to manually drag & drop for the subsequence order. Is there any workaround that we can set so that the subsequence order will be moved accordingly when we manually reschedule the order C to earlier date?
P/S: Workaround for item no. 3 would be helpful if order overlapping is not possible in APO.
You canrefer to SAP note -601990 which gives information about external relationship. I.e. relationship between activities of two different orders. Note has explaned sample report and risk behind defining such relationship.
So you can try with continuous production where component D is supplied continously and not at discrete points.
In BOM of C for Bom component D mention distrubution key GLEI. As only equal disrubution is supported it maynot meet exact requirement. this will come as continious consumption indicator in PPM.
One more limitation is if you have sequence dependent setup then you need to assign component to process activity.
As far as workaround to point 3 you can try running bottom up heuristic to adjust the dates at the top level. But problem with bottom up is it will plan using infinite scheduling mode.
I have tested by setting the operation leadtime offset & GLEI key. But as you say, it doesn't meet our exact requirement because our process is not a continuos production.
Besides this, is there any other work around to enable the order overlapping for discrete production? Our requirement is to get the next order starts right after certain send ahead quantity/time of previous order is completed.