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Question from sarmadnahvi on Aug 26 at 4:34 PM We have a material SU17070 that has 6 operations that run ~ 1 week. The first two operations reference the same work center CII25 which is the one we are leveling to.
SU170707 Work Center Description ACTS
100 CII25 SOLDAR 40
200 CII25 COLGAR 0.83
300 1064 LAVAR 1.67
400 1091 PINTAR 4.166
What we have found is SNP plans 1 day per operation, so that it plans the first operation on day one, and then the second operation on day two, no matter the standard value. This seems to have ramifications during capacity leveling, as the leveling procedure will not break this relationship.
If we have a 100 piece order for our material above, it will plan 40 hours on day one, and .833 hours on day two. If we attempt to level this order, it may move the order around, but this relationship is maintained. On a monthly scale, this leads to a poor utilization that looks something like the following:
1-Sep 2-Sep 3-Sep 4-Sep 5-Sep 6-Sep 7-Sep 8-Sep
99.50% 2.00% 98.00% 2.00% 99.00% 2.00% 99.00% 2.00%
In looking at the SNP PDS, I see that the 1st operation is set to a fixed duration of 1 Day, whereas the PPDS PDS is set to a variable duration of 144,000 seconds, which tells me SNP is always going to plan 1 day for that operation, similar to a queue time in R3. We were not able to change this value by deleting/recreating the PDS.
We found this note in the SNP Leveling documentation, which seemed to support our research.
• For the workcenters involved with capacity leveling, only one operation should have that workcenter in the routing. Otherwise, SNP planning uses a day for each operation that the workcenter is in and causes the orders to have too much offset.
Are we correct in thinking that SNP simply does not provide detail greater than 1 day / operation? In order to get reliable results, the routing would need to use the leveled work center only once. What about other operations that are not used for leveling? Would SNP still use them to create an order schedule that did not match what is in R3?
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