ATP Check with MRP Areas (SAP Library - Material Requirements Planning (PP-MRP))

ATP Check with MRP Areas

Use

As soon as you have activated material requirements planning with MRP areas, the ATP check is also activated at MRP area level. This replaces the existing plant with the MRP area. If a material had been checked at plant level up to now, it is now checked at MRP area level.

Note

If you have not yet defined any MRP areas, the plant then corresponds to the plant MRP area. The availability check is then carried out in the plant MRP area.

Integration

The ATP check at MRP area level runs in the same way as the general ATP check.

Prerequisites

In Customizing for MRP in the IMG activity Define availability check for components → Determine check, you have defined per checking rule whether the ATP check is to be carried out with or without storage location check.

Features

The receipt and issue elements are dynamically assigned to the correct MRP area using the receiving and issue storage locations and are settled against the available stock in the MRP area. Like the ATP check at plant level, there are two different options:

ATP check with storage location check
ATP check without storage location check, that is, multi-site check

ATP without Storage Location Check

If you have not set the system to carry out a storage location check, it will only carry out a single-level ATP check at MRP area level.

The MRP area of the receipt and issue elements to be taken into consideration is dynamically determined by the receiving storage location, the issue storage location, the MRP area segment in the material master and the Customizing settings for the MRP area. However, only the storage location information is required for the determination of the suitable MRP area. The ATP check is only carried out within the MRP area.

Example

The spare part A is assigned to the MRP area of the storage location 0002 and 0003.

A sales order is created for the spare part and the storage location 0002 is entered.

If you have not set the storage location check, the ATP check is only carried out for the material A in the MRP areas of the storage locations 0002/0003. No check against storage location 0002 is carried out.

If you do not enter a storage location in the sales order, the sales order belongs to the plant MRP area and the ATP check, in this case, is carried out in the plant MRP area.

ATP Check with Storage Location Check

If you have set the storage location check, the system carries out a double-level ATP check:

In the first step, the system determines the available quantity in the storage location.
In second step, the system determines the available quantity in the MRP area.

The system then takes the smaller of the two quantities as the result.

Example

The spare part A is assigned to the MRP area of the storage location 0002 and 0003.

A sales order is created for the spare part and the storage location 0002 is entered.

In the first step, the system carries out the ATP check in the storage location 0002. During this check, the system determines all receipts and issues of the storage location 0002 and calculates the available quantity.
In the second step, the ATP check is carried out in the MRP area of the storage locations 0002/0003. During this check, the system determines all receipts and issues of the storage locations 0002 and 0003 and calculates the available quantity.

The smaller of the two quantities is taken as the result of the ATP check.

Availability Check: Organizational Levels