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Jun 08, 2018 at 03:11 PM

production order scheduling trouble

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Dear expert,

I'm using S4Hana; during production order scheduling, I encounted the following problem: using forward scheduling, creating a production order of 1 pc, I try to set the basic start date at 5 am but the system changes this field into 05:40.

Work center shift starts at 5 and finishes at 10

Cycle time regarding first operation is 20 min per 1 pc.

If I change the PO quantity into 2pc, trying set start date at 05:00, system changes this field into 05:20; If I change the PO quantity into 3pc, trying set start date at 05:00, system changes this field into 05:00.

It seems that system creates a sort of buffer time; infact, changing the alignment key of sequnce 0 (the only one), the start date is correctly set at 5am but the following operation doesn't start immediately after the first (same buffer moved between the first and the second operation)

Thank a lot for your support!