Thanks Babu & Bala,
I had to take a pen and paper to work on the scheduling and analyzed the algorithm system is performing.
When GR hours are maintained for a customer from 8 to 12 & 1 to 6, which is in UTC+6 time zone & location is in CET time zone with RDD as today where 2 products are triggered for ATP (one from ECC & another from APO).
1. For ECC product, material availability date is today which is correct as expected
2. For APO product, material availability date is next day.
Reason:
1. System performs a forward scheduling by default but the delivery date time is beyond the GR hours on that particular day (Eg: after 6 in UTC+6 time zone). Now, system does a backward scheduling by pushing delivery date to the next day by considering opening time of the GR hour and calculates the material availability date which falls next day to the current day.
Please see the below example, I hope I was clear
Eg:
Pick : 1 day & Tran: 6 days; May 1st & Weekends are holidays.
| GR: | 8:00 | 12:00 | 13:00 | 18:00 |
| UTC day | UTC time | CET day | CET time | UTC+6 day | UTC+6 time | |
| RDD | 30/04 | 17:24 | 30/04 | 7:24 | 30/04 | 23:24 |
| MAD | 30/04 | 17:24 | 30/04 | 7:24 | 30/04 | 23:24 |
| Lod/GI | 02/05 | 17:24 | 02/05 | 7:24 | 02/05 | 23:24 |
| Del | 12/05 | 17:24 | 12/05 | 7:24 | 12/05 | 23:24 |
| Del | 13/05 | 1:00 | 13/05 | 3:00 | 13/05 | 8:00 |
| Load/GI | 05/05 | 1:00 | 05/05 | 3:00 | 05/05 | 8:00 |
| MAD | 02/05 | 1:00 | 02/05 | 3:00 | 02/05 | 8:00 |