OPM Parallel Operation Step Dependencies Not Honored In EDD Constrained Without Detailed Scheduling ASCP Plan
(Doc ID 2287183.1)
Last updated on FEBRUARY 25, 2019
Applies to:Oracle Advanced Supply Chain Planning - Version 12.2.4 and later
Information in this document applies to any platform.
On : 12.2.4 version, Constrained Planning in PROD:
Users are on 12.2.4 and have applied VCP Cum Patch 126.96.36.199 - 19549533 - using 64 bit Linux MBP with one off patch 25202143 using version MSONWL64.ppc 120.15.12020000.58.1220402.3
Users are running EDD Constrained without detailed scheduling plan and they're seeing an issue where resources are being planned sequentially rather than in parallel
Item = 41156-05 - Inv item id 218022
Org = MAS:SHU - Org id 19836
Planned order qty = 103,341 trans id = 93400413
Sugg Start Date = 05-OCT-2017
Sugg Due Date = 28-NOV-2017
Res Name = SHTUS10 Res Id = 4109 Op Seq = 10 Res Seq = 100 ends 02-NOV - 672 resource hours
Res Name = SHTUS20 Res Id = 4111 Op Seq = 20 Res Seq = 100 ends 07-NOV - 120 resource hours
Res Name = SHTUS30 Res Id = 4113 Op Seq = 30 Res Seq = 100 end on 28-NOV - 528 resource hours
Op Seq 20 and 30 have Previous Step Op Seq 10 shown as Dependency Type = Finish-to-Start with no delays. So step 20 and 30 both start and would run in parallel after op seq 10. However it appears that all resources are planning sequentially
Step 20 & Step 30 are set to run in parallel. And based on this set-up Lead-Time for 1 process quantity is 50 days((672+528)/24). However ASCP Plan does not appear to be looking into step dependency details and calculating Lead-time as 55 days which is sum of all above/ Number of hours in day ((672+120+528)/24).
Expect the ASCP plan to take into account parallel operations and not plan them sequentially
The issue can be reproduced at will with the following steps:
1. Setup OPM resources in parallel using Dependency Type = Finish-to-Start
2. Run data collections
3. Run EDD Constrained without detailed scheduling plan
4. Find resources are planned sequentially instead of in parallel
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