The determination of dates depends on the order creation type. A production order is created by
Converting a planned order into a production order
Creating a production order manually
Converting a Planned Order into a Production Order
If material requirements planning has already created a planned order for producing the material, the basic dates are copied from the planned order and the order start and finish dates are determined in a new scheduling run. If necessary, reduction measures are carried out.
Creating a Production Order Manually
If no planned order exists and you create the production order manually, the scheduling type determines which basic dates you have to enter.
If you enter both basic dates, the system tries to adhere to these dates when carrying out forwards or backwards scheduling. If necessary, the system also carries out reduction measures.
The following tables show which dates you have to enter and which dates are calculated via scheduling.
Date Determination Based on the Basic Dates
If the scheduling type specifies |
you enter |
scheduling calculates |
forward scheduling |
order start date |
scheduled start scheduled finish order finish date |
forward scheduling |
order start date order finish date |
scheduled start scheduled finish |
backward scheduling |
order finish date |
order start date scheduled start scheduled finish |
backward scheduling |
order finish date order start date |
scheduled start scheduled finish |
only capacity requirements are determined |
order start date order finish date |
scheduled start scheduled finish |
today scheduling |
no entry |
order finish date scheduled start scheduled finish |
today scheduling |
order finish date |
scheduled start scheduled finish |
Date Determination Based on the Scheduled Dates (Production Dates)
If the scheduling type specifies |
you enter |
scheduling calculates |
forward scheduling |
scheduled start |
order start date order finish date scheduled finish |
forward scheduling |
scheduled start scheduled finish |
order start date order finish date |
backward scheduling |
scheduled finish |
order start date order finish date scheduled start |
backward scheduling |
scheduled start scheduled finish |
order finish date order start date |
only capacity requirements are determined |
scheduled start scheduled finish |
order start date order finish date |
today scheduling |
No entry |
order finish date scheduled start scheduled finish |
today scheduling |
scheduled finish |
order finish date scheduled start |
today scheduling |
scheduled start scheduled finish |
order finish date |