ERP Service Module – Call Handling and Service Orders Control
February 12, 2025
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Order based Planning: Order-based planning is the functionality that plans planned orders to cover components and end items. This functionality largely corresponds to Materials Requirement Planning (MRP) and uses BOMs (Bill of Materials) to explode material requirements and the routings to calculate lead-time of planned production orders.
A combined overview of order based planning and master based planning
If order horizon is set to zero, the system plans supply through master based planning only. If order horizon is equal to planning horizon, the system plans all supply through order based planning
Order Promising - ATP & CTP: Demand forecasts are gradually consumed by actual customer orders. The calculated item quantity that is available (to sell or consume) on a certain future date, based on the current supply planning is known as Available to promise (ATP). ATP is an indicator of inventory availability that is specifically geared to the process of order acceptance. ATP may be for one period or may be cumulative over a number of periods. When it comes to accepting customer orders, a plan period’s cumulative ATP is a clear indicator of the order quantity that can still be promised to deliver in that plan period.
The functionality behind the notion of cumulative ATP is further enhanced by Enterprise Planning’s extended capable-to-promise (CTP) checking techniques. These techniques not only consider what can be promised on the basis of the planned supply, but also explore the possibility of producing more than what the current supply planning indicates. There are various dimensions of checking CTP such as:
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