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finite scheduling op sequence not maintained

Dear PP gurus,

When system automatically does finite scheduling during overload, I get 3 warning messages.

Schedule conflict: Constraint is too late

Schedule conflict: Constraint is too early

Overlapping could not be maintained

I have 8 operations in which 6 overlaps with 7 and 7 overlpas with 8 (min send ahead)

But when finite scheduling,the 6th operation is scheduled before start of 4th operation when system does finite scheduling after 6th operation shows an overload.

My settings in OPDB , Scheduling controll - finite scheduling and insert opeartion ticked and 2 for closing gaps

SAPMRPAS03 - dispatch sequence with latest start date dispatch(I am using backward scheduling)

Dispatching functions

Sort operations to be dispatched-ticked

Consider operation sequence in the order-ticked

Operation date check-ticked,

Please help me figure out the issue,

Thanks in advance,

Sunanth V.Narayan

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