Capable-To-Promise (CTP) (SAP Library - SAP Advanced Planner and Optimizer (SAP APO))

Capable-To-Promise (CTP)

Use

CTP is a function in Global ATP. CTP means calling Production Planning and Detailed Scheduling (PP/DS) when the product requested is not fully available. This means that planned orders or purchase requisitions can be created for the shortfall quantity in PP/DS.

It is only meaningful to use this method if enough time is available for production or for procurement, or if production is the quickest or only option for obtaining the product on the requested delivery date.

Calling PP/DS can be made via the basic methods in the check instructions or via the location determination activity when carrying out rules-based ATP.

Integration

Planned orders or purchase requisitions can be created automatically in PP/DS. You will find additional information in the documentation for Production Planning and Detailed Scheduling and Maintaining PP/DS Settings.

Prerequisites

In the active version (000), the PP/DS: Automatic planning active and the PP/DS: Change planning active indicators must be set. From the SAP Easy Access screen select Master Data ® Model and Version Management and choose the active version.

You configured automatic planning immediately in the location-specific product master data in the PP/DS screen. You must maintain this setting in APO. From the SAP Easy Access screen choose Master Data ® Product. Enter a location product and select tab page PP/DS.

Activities

Calling PP/DS via the advanced methods

In Customizing it is possible, via the check instructions, to define the start and time of production in the advanced method (After executing all basic methods or After executing the product availability check).

Several combinations are possible as will be shown in the following example.

If you carry out a combination of basic methods, the requirements quantity given by the calling system is always the requirements quantity for the first basic method. Confirmed quantities of the previous basic methods always produce the new requirements quantity for the subsequent basic method.

You maintain the check instructions in Customizing for the Advanced Planner and Optimizer (APO) via Global ATP ® General Settings ® Maintain Check Instructions. For the setting for the production type Availability check first, then production the following applies:

Setting in the check instructions: After executing all basic methods

The quantity requested for production is the original requirements quantity less the total quantity confirmed through the basic methods (see also Combination of Basic Methods)

The confirmed quantity results from the quantity that can be produced, plus the total quantity that can be confirmed from the basic methods.

The sequence of basic methods has no effect on the quantity produced and/or confirmed.

Setting in the check instructions: After executing the product availability check

The quantity requested for production is the requirements quantity that was transferred to the product availability check, less the quantity that can be confirmed at the finished product stage.
The confirmed quantity is the sum of the total quantity of the product availability check that can be confirmed at finished product stage, plus the quantity that can be produced.
The sequence of basic methods is relevant.

For the other values of the Start production indicator the configuration of the time of production indicator is irrelevant. Additional information is available in the documentation for the example Possible Combinations in CTP Via the Advanced Methods.

Calling PP/DS from the availability check counts as one of the advanced methods.

Calling PP/DS via the location determination activity

You can determine via the location determination activity in Integrated Rule Maintenance if Production Planning and Detailed Scheduling are called in location determinations.

It is the case that for settings that exist both in the location determination activity and in the check instructions (for example, calling PP/DS), the settings of the location determination activity are used by the availability check. As a result you can control further processes (like, for example, calling PP/DS) using the location determination activity.

This means, however, that in a substitution group, for example, in which you only want to partially call Production Planning and Detailed Scheduling for location determinations, location determination activities of the type Availability check only, no production have to be maintained explicitly. Another option is, of course, to switch off calling PP/DS in the check instructions completely.

To maintain the location determination activity, from the SAP Easy Access screen select Master Data ® Rule Maintenance ® Integrated Rule Maintenance.

In order that production is scheduled in the source plant, you must work with a dummy production plant. Production Planning and Detailed Scheduling are called in this case if a location determination (that is, a substitution) has taken place. Additional information is available under Producing Location Determination Activities.

Example

This example describes how the system behaves if you have configured a combination of basic methods including CTP via the check instructions.

Product allocation is the first check method, the product availability check the second. Requirements quantity is 8 PC; requirements date is 01.01.00.

Requirements and confirmations for the product allocation / product availability check combination

1. Check method	Requirements date	Requirements quantity	Confirmed date	Confirmed quantity
Product Allocation	01.01.00	8	01.01.00 01.02.00	5 3

Note that the result of product allocation is received in the product availability check as a requirements quantity.

2. Check method	Requirements date	Requirements quantity	Confirmed date	Confirmed quantity
Product Availability Check	01.01.00	5	03.01.00 04.01.00	3 1
Product Availability Check	01.02.00	3	02.02.00	2

Delivery proposal of the basic methods

Schedule line date	Confirmed quantity
03.01.00	3
04.01.00	1
02.02.00	2

You see in the delivery proposal that the requirements quantity cannot be fully covered. The shortfall requirements quantity should be produced. You have now defined if production should be started after execution of the basic methods or after execution of the product availability check.

Setting: Production after executing all basic methods

Confirmed date	Confirmed quantity	Request for production
03.01.00 04.01.00	3 1	2
02.02.00	2	2

The results are taken into account after execution of all basic methods for the time of production. As a result, a planned order for 2 is created for the original requirements date 01.01.00.

Delivery proposal screen

Schedule line date	Confirmed quantity
01.01.00	2
03.01.00	3
04.01.00	1
02.02.00	2

Setting: Production after executing the product availability check

Confirmed date	Confirmed quantity	Request for production
03.01.00 04.01.00	3 1	1
02.02.00	2	1

The results are taken into account after execution of the product availability check for the time of production. As a result, a planned order for 1 is created for the original requirements dates 01.01.00 and 01.02.00. Production is carried out in the periods that are set by product allocation.

Delivery proposal screen

Schedule line date	Confirmed quantity
01.01.00	1
03.01.00	3
04.01.00	1
01.02.00	1
02.02.00	2

See also:

Automatic Planning

Settings for Global ATP

Availability Check calling Production Planning and Detailed Scheduling (PP/DS)