Production Planning and Detailed Scheduling (PP/DS) 

Purpose

The component Production Planning and Detailed Scheduling (PP/DS) enables you to plan and optimize multi-site production while simultaneously taking into account product and capacity availability. PP/DS is designed to plan critical products, for example, with long replenishment lead times or that are produced on bottleneck resources.

With PP/DS you can create executable production plans and

Integration

The data relevant for planning, such as master and transaction data, is provided by a connected OLTP System. Products are planned in the APO System and the planning results are then transferred to the OLTP System, where you perform execution functions. Requirements data from long and medium-term planning can also be transferred to PP/DS within APO from Demand Planning and Supply Network Planning.

The following diagram represents the integration between an OLTP system and the APO system and its components:

Integration within APO and with an OLTP System

The following table shows how PP/DS is integrated with the OLTP System and other APO components:

Integration with Other APO Components and an OLTP System

To

Procedure

Other Information

Set up master data

Transfer the master data from the OLTP System and maintain the necessary data in the APO System

The OLTP System provides PP/DS with master and transaction data. You control which data is to be transferred to and from the OLTP System in the integration model of the core interface. For more information, see Integration of APO and R/3.

Set up the Supply Chain Model

Use the Supply Chain Engineer (SCE)

In the SCE, you assign the locations, products, resources and production process models (PPM) to a model. You then add transportation lanes to link supply to demand locations and to allocate products to the transportation lanes.

Make the unconstrained forecast (from Demand Planning) available in PP/DS

Release the demand plan to Supply Network Planning

Requirements that fall within the production horizon and thus the planning responsibility of PP/DS, are transferred directly to PP/DS.

Transfer the planning results of Supply Network Planning to PP/DS for more detailed planning

Convert the orders that lie in the production horizon into PP/DS orders.

You can also to convert specific individual orders that are outside the production horizon.

Perform an ATP check using Global ATP and PP/DS

Create a sales order in the connected OLTP System

If the result of the ATP check is to produce, Global ATP calls up PP/DS to determine the availability date while taking product availability and capacity into account.

Display exceptional, unexpected or critical situations in the PP/DS planning process

Access the Alert Monitor

You can define which types of alerts you would like the system to generate and display.

Perform execution of orders

Use the connected OLTP System

For example, confirmation, goods receipt.

 

Features

You can define that the System is to plan products automatically in PP/DS when you change orders or data relevant to planning in the APO System or the connected OLTP System. This enables up-to-date planning data in both systems.

With automatic planning, the system checks the availability of resources and components when orders are created. The result is feasible availability dates for the product and its components.

Using pegging, the APO system creates a relationship between the receipt and requirements elements of a product within a location. The system generates a pegging structure that is organized according to the BOM structures of all relevant products. The dynamic pegging structure ensures that quantity or scheduling changes are transferred to orders at lower levels of the BOM structure.

You can use interactive planning for important products that you wish to plan manually and to solve any planning problems that have arisen during automatic planning. Interactive planning is supported by the following tools:

In the DS Planning Board the planning situation and resource schedule are displayed in Gantt charts. You use the detailed scheduling planning board to reschedule orders or operations manually.

You use the product planning table to plan the production quantities for products and the schedule of the production lines.

Using the optimization tool, you can optimize the resource schedule according to certain criteria, such as setup times and setup costs, to improve the planning situation and solve particular detailed scheduling problems.

You use heuristics to solve specific planning tasks for selected objects (depending on the focus of planning: products, operations, resources or line networks) using a particular planning procedure algorithm. You can apply heuristics both during interactive planning and during the production planning run.

You use the production planning run to execute heuristics, detailed scheduling functions or optimization for a large number of objects online or as a background job. During the production planning run, several heuristics or functions can be executed one after another.

Constraints

The component Production Planning and Detailed Scheduling is a planning tool. Execution functions, such as shop floor control with confirmation, purchasing and so on, must be performed in an OLTP system.