Availability Check Calling PP/DS (SAP Library - SAP Advanced Planner and Optimizer (SAP APO))

Availability Check Calling PP/DS

Use

You carry out an availability check in APO and want production to take place if the requirement cannot be covered.

Production Planning and Detailed Scheduling (PP/DS) can be called directly.

Prerequisites

Settings in APO (Global ATP)

If you want to configure production for the availability check you must have maintained production in the check instructions.

If you want to configure production for the rules-based availability check and your substitute locations are not just production plants, you must have maintained prodution in the location determination activity. In this case you should not have configured production in the check instructions.

Note that the location must be a production plant. Testing of the locations only takes place if you enter the substitute locations in the location determination procedure.

Settings in PP/DS

You selected tab page PP/DS in the location-specific product master data. You must have configured automatic planning for the multi-level availability check. You must also define here where the bill of material should be exploded.

See also:

Maintaining Check Instructions

Maintaining Location Determination Activities

Production Planning and Detailed Scheduling

Settings for PP/DS

Automatic Planning

Settings in the R/3 System

You created bills of material for your finished products, created routings and production versions and entered them in the material master.

You transferred the materials, plants, routings and bills of material via the CIF into APO.

Process

You create a sales order in the R/3 System (SD).

An availability check is executed in APO. The system checks if the requested product is in stock. It is established that there is a shortage.

The shortage triggers a "completed decision", regardless of the Customizing settings. In this case the requirement is transferred to Production Planning and Detailed Scheduling (PP/DS) in APO.

In Production Planning and Detailed Scheduling (PP/DS) the "feasible" availability date is determined. Temporary planned orders are created, independent of the lot size. The capacities are then taken into account.

The result (confirmed dates and confirmed quantities) is displayed as an availability proposal in APO.

If the date corresponds to the requested delivery date you branch immediately to the sales order. If the date does not correspond to the requested delivery date you branch firstly to the APO availability check: delivery proposal. You confirm the delivery proposal (for example, one-time delivery, complete delivery or delivery proposal) and go to the sales order entry again in the R/3 System.

You can determine the rule for adopting the results of the availability check in the R/3 System in Customizing for Sales and Distribution in IMG under Basic Functions ® Availability Check and Transfer of Requirements ® Availability Check ® Availability Check with ATP Logic or Against Planning ® Define default settings.

See also:

Reactions to the Availability Check

You save the sales order in the R/3 System.

If you cancel the sales order entry in the R/3 System the temporary objects are deleted.

The saved sales order is transferred to APO. Permanent planned orders are made from the temporary planned orders. The temporary quantity assignments are deleted. The time series’ are updated.

If plans (or orders) were created, changed or deleted in APO, the new datasets (=results) are stored on the one hand as a date and on the other hand logged as an event in the event channel. That is, the information about the data changed is passed on to the event channel as an event. The event is not the data record itself, rather the link to it. An event always contains information on:

Method (new, changed or deleted data)
GUID (globally unique identifier) for key completion
Order number from the R/3 System
External order type
Location & location type (or source and target locations for stock transfers)
Material number
APO order type
Start/End dates

These planned orders are transferred in this case via a direct retransfer to the R/3 System, that is, new events (information about the data changed) are transferred automatically to the R/3 System via the system-defined standard settings in APO. The R/3 System takes the data directly via the event channel or indirectly via a table entry on the R/3 side. The data is extracted from liveCache, converted into interface structures and sent to the respective target system. For newly-created planned orders on the APO side the R/3 System returns the assigned GUID and the external number to APO.

Additional information is available in the integration documentation.

These planned orders are converted to production orders in the R/3 System. Production is thereby triggered.
The production orders are transferred to APO. The production orders go over to the stock. The category is then changed. The time series’ in APO are updated correspondingly.

See also:

Capable-To-Promise (CTP)