In the IMG, in the Maintain plant parameters there is a button for Rescheduling for specific plant.
What is the rescheduling horizon?
There are certain elements such as firm planned orders, PO, firm purch reqs. etc. that are considering in here but what is the rescheduling horizon? What does it do?
The rescheduling horizon is the period in which the SAP
System checks whether the existing dates still suit the requirements
situation for receipt elements that can no longer be
automatically changed in the planning run. If the dates of a particular
element are no longer suitable, the following exception messages are created
depending on the requirements situation:
Bring element forward
- if the date of the requirement lies before the date of the receipt element postpone element, if the date of the requirement lies after the date of the receipt element.
Delete element
- if the requirement no longer exists When defining the rescheduling horizon, think about the period in which you want to carry out a precise planning run. You define the rescheduling horizon per plant or per MRP group.
The following receipt elements are not changed during the planning run:
- firmed planned orders
- firmed purchase requisitions
- purchase orders
- production orders
- QM inspection lots
You can also define a tolerance time for the rescheduling proposal, that is, a tolerance by which the requirements date can vary from the order finish date or the delivery date of the receipt element. Only once this tolerance value has been exceeded, will the system create a rescheduling proposal.
Notes
If no rescheduling horizon has been maintained, the system
will not carry out a rescheduling check. This means, the system does not
create an exception message for firm order proposals. Instead, a new receipt
element is created for every new planned requirement and the system does
not take the existing, firmed, receipt elements into account whose dates
are unsuitable.
The system calculates the rescheduling horizon from the
end of the replenishment lead time in reorder point planning.
Recommendation
In joint production it is not possible to reschedule receipt
elements at will, because the goods receipt depends on the planning
run for another material. For this reason, it is best
to use a very small rescheduling horizon.
Actions
1. Define the rescheduling horizon for your plants or
MRP groups.
2. Decide which receipt elements are to be included in
the rescheduling check.
3. Define the tolerances for your plants or MRP groups,
within which you do not want rescheduling proposals.
