Product Interchangeability in SNP-PP/DS Integration (SAP Library - Production Planning and Detailed Scheduling (PP/DS))

Product Interchangeability in SNP-PP/DS Integration

Use

If you implement SNP integrated with PP/DS, depending on the scenario, PP/DS can:

· Adopt the SNP procurement planning results and adjust them to be specific to PP/DS

· Execute independent procurement planning in the short-term area

You can plan product substitutions with both applications.

To plan using product interchangeability in an integrated SNP-PP/DS scenario, you have to take account of the following attributes of SNP product substitution orders:

· You cannot convert SNP product substitution orders into PP/DS product substitution orders.

· However, PP/DS is able to take account of the SNP product substitution orders if you set the conversion indicator for a PP/DS planned order (see below).

· In a PP/DS procurement planning run, PP/DS deletes SNP product substitution orders (as it does other SNP procurement proposals) as soon as they are in the PP/DS horizon.

The PP/DS planned order has to contain the valid substitute components at the latest when you execute a PP/DS planned order for an assembly with interchangeable components and want to transfer it to SAP R/3, for example. To adopt substitute components in the PP/DS planned order, you set the conversion indicator for the planned order – this is scenario-dependent – or execute an ATP check. The prerequisite for these PP/DS functions is that the interchangeable components belong to a supersession chain. PP/DS does not support FFF classes.

Note

In SNP, there are no functions available for adopting substitute components.

Features

The following sections describe how you plan with product interchangeability in the typical SNP-PP/DS scenarios.

Scenario: Adopting the SNP Procurement Planning Results

You execute a procurement planning run in SNP. In the planning run, the system creates regular SNP procurement proposals (such as SNP planned orders) and SNP product substitution orders. To adopt the planning results from SNP procurement planning, you convert the SNP procurement proposals into PP/DS procurement proposals as soon as the SNP procurement proposals are in the PP/DS horizon. With PP/DS, you execute sequencing for the PP/DS planned orders using PP/DS optimization, for example.

You cannot convert SNP product substitution orders into PP/DS product substitution orders. However, since you have not executed procurement planning in PP/DS, PP/DS does not delete the SNP product substitution orders. If you set the conversion indicator for a PP/DS planned order, PP/DS is able to take account of the SNP product substitution orders and update the components of a PP/DS planned order based on SNP product substitution orders.

Note

· In the settings for the SNP-PP/DS conversion, you can define that PP/DS sets the conversion indicator for a PP/DS planned order directly after the conversion.

· There must be a pegging relationship between the dependent requirement and the product substitution order so that PP/DS takes account of a product substitution order for a dependent requirement. This also applies to SNP product substitution orders. The system creates dynamic pegging relationships automatically as long as the pegging interval is not violated. Since there can be date shifts for PP/DS planned orders in the SNP-PP/DS conversion or in the subsequent PP/DS sequencing, you should configure a pegging interval in the location product master that allows a delay for product substitution orders.

You only set the conversion indicator in a shop floor production scenario, in other words when you want to transfer PP/DS planned orders to SAP R/3 as manufacturing orders. In a shop floor production scenario, you perform an ATP check in PP/DS for a PP/DS planned order to adopt substitute components in the planned order. SNP product substitution orders are not relevant for the ATP check. The ATP check determines the substitute components based on their availability.

Scenario: Independent Procurement Planning in SNP and in PP/DS

With SNP, you execute procurement planning for the period outside the SNP production horizon, while with PP/DS, you execute procurement planning in the PP/DS horizon. (In the simplest case, the planning periods follow on from each other seamlessly, but they can also overlap.) In a procurement planning run, PP/DS deletes the SNP orders in the PP/DS horizon and creates its own procurement proposals in the PP/DS horizon. In particular, PP/DS deletes the SNP product substitution orders and creates its own product substitution orders based on the supersession chain. Before you start execution for a PP/DS planned order with interchangeable components and transfer the planned order to SAP R/3 as a manufacturing order, for example, you adopt the substitute components in the planned order using the ATP check or by setting the conversion indicator (see last section). When you set the conversion indicator, PP/DS updates the components from a planned order based on the PP/DS product substitution orders.