Order Receipt Without Immediate Confirmation (MRP Process) 

Purpose

You use fixed pegging in this scenario to create a feasible product plan by fixing the material flow for planning. The material flow is controlled by production planning and is to be fixed for finite planning. However, optimization of the material flow does not take place.

The customer only receives a confirmed date once PP/DS has created a finite production plan. You can also carry out the ATP check against the checking horizon and consider the scope of check.

You can use the scenario in make-to-stock and in make-to-order production.

In this scenario, fixed pegging is retained throughout all process steps. In particular, document changes in the complete production planning and execution process do not lead to a loss of the existing fixed pegging relationships. For more information about the retention of fixed pegging relationships, see SAP Note 698427.

Prerequisites

In the ATP Customizing you have set the value Characteristic Evaluation in the Production Type field in the check mode. See also: Settings for the MRP Process.

Process Flow

       1.      Order receipt without ATP check

You create the incoming sales orders in SAP R/3 without carrying out an ATP check for them. Therefore, you cannot tell the customer a confirmed date at this point in time.

       2.      Execute MRP run

You carry out an infinite MRP run. In this MRP run the system plans products with planning file entries. The system creates the missing receipt elements on a multi-level basis. You carry out the MRP run regularly, for example, every night.

       3.      Multi-level fixing of the material flow

You carry out the heuristic SAP_PP_019 on a multi-level basis. On the basis of the finished product for each BOM level, the system creates fixed pegging relationships between the requirements and the receipt elements. Note that the system can only create fixed pegging relationships on all BOM levels if you select all products in the BOM structure for the planning run The result of this processing step is a multi-level pegging structure, which the system has created on the basis of the finished product.

       4.      Carry out detailed scheduling

You now carry out finite planning in order to create a feasible production plan. You can choose between the following options for finite planning:

¡        PP/DS optimization

¡        Detailed scheduling heuristics

       5.      Back order processing

You carry out backorder processing (BOP) in order to get confirmed dates for the sales orders that have not yet been confirmed. Backorder processing includes an ATP check that considers the fixed pegging relationships; this means that the fixed pegging relationships between requirements and receipt elements are the basis for all assignments made by the ATP check. The system determines a confirmed date for all sales orders that have not yet been confirmed. It also rechecks the sales orders that have already been confirmed and, if necessary, determines new confirmation dates for them.

       6.      Evaluation of backorder processing

During backorder processing, the system creates an evaluation of all sales orders. To call up the evaluation, choose Backorder Processing → Backorder Processing Result. You can use this evaluation to check which orders have a new confirmation date after backorder processing.