Determination of the Stock Exhaustion Warning Date

Use

If the successor product planning date has been reached, the supersession service calculates the stock exhaustion warning date for each entry location. It then saves the date for each entry location in the master data for product and location interchangeability.

Features

In the master data for product and location interchangeability under Use-Up Strategy , you can specify that you want to work with a use-up strategy or partial use-up strategy. If you have done so, the system calculates the stock exhaustion warning date as follows: It performs backwards scheduling from the stock exhaustion date by the following times that you have NOT selected in Customizing:

Longest delivery time of the successor product from the supplier to the entry location
Longest delivery time of the successor product within the bill of distribution (BOD) from the entry location to the subordinate stockholding location
The buffer resulting from the destocking of safety stock to a value you defined

You can specify this value in Customizing under Make Settings for Calculating Supersession Times in the Buffer (% of Safety Stock) field.
The buffer in days that you specified in Customizing under Make Settings for Calculating Supersession Times

For more information about these times, see the Implementation Guide (IMG) for Advanced Planning and Optimization under Start of the navigation path Supply Chain Planning Next navigation step Service Parts Planning (SPP) Supersession Settings for Calculating Supersession Times End of the navigation path .

Example Example

You have NOT set the following indicators in Customizing:

Do No Consider Supplier Procurement Lead Time

Do Not Consider Buffer

In this case, the system performs backwards scheduling from the stock exhaustion date by both these times, and in doing so calculates the stock exhaustion warning date.

This process is illustrated in the figure below:

This graphic is explained in the accompanying text.

End of the example.

The system uses the date that it calculates with backwards scheduling as the stock exhaustion warning date.

Exception

If the system uses the current date as the successor product planning date instead of the calculated successor product planning date, it performs the following steps when determining the stock exhaustion warning date:

It schedules the calculated stock exhaustion warning date forwards by the time span by which it has also scheduled the successor product planning date forward.

Example Example

On September 7, 2005, the system calculated September 5, 2005 as the successor product planning date. Since the calculated successor product planning date was in the past, the system determines the current date, September 7, 2005, as the successor product planning date. This means that the system moved the calculated successor product planning date two days forwards.

After performing backwards scheduling from the stock exhaustion date to determine the stock exhaustion warning date, the system now also performs forwards scheduling by two days, to determine the final stock exhaustion warning date. The following figure illustrated this process:

This graphic is explained in the accompanying text.

End of the example.

Special cases:

For one-to-one substitution with partial substitution or one-to-zero substitution, the system does not calculate a stock exhaustion warning date.
For one-to-many substitution (AND) or (OR), the system chooses the longest delivery time of each of the successor products as the delivery time of the supplier and the delivery time within the BOD.
For many-to-one substitution (OR), the system determines the stock exhaustion warning date for each supersession chain separately.