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Block Planning (enhanced) ( RELNAPO_310_CA_CDP_BLOCK )

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Short text

Block Planning (enhanced)

Use

SAP APO 3.1 has been enhanced with the following block planning functions:

• Block planning with buckets

• Block planning with the productive time or an equivalent to the productive time

Block planning with buckets

In SAP APO 3.1 you can now also execute block planning on single-mixed resources with bucket capacities. The blocks define the buckets. The bucket capacity of a block is derived from the productive time of the resources, and if necessary is corrected by an overload factor.

In block planning with buckets for block-planned single-mixed resources, you can sucessively

• Execute a "rough" finite scheduling, in which the system schedules operations finitely in the buckets

Here, the time-continuous capacity of a block is not important for the resource availability in a block. Rather, the bucket capacity of the block is important. The system can only schedule an operation in a block if there is sufficent bucket capacity in the block.

• Execute a detailed finite scheduling, in which the system checks the capacity availability in a block against the time-continuous capacity in the block

The system can only schedule an operation in a block if it can find a sufficiently long slot for the operation in the block.

For detailed finite scheduling of blocks on single-mixed resources after bucket-oriented finite scheduling, you can use the following heuristics:

• Adjust block limits

This heuristic adjusts the block limits within a cycle to the current resource loads of the block in the cycle.

• Reschedule block

This heuristic schedules the operations finitely against the time-continuous capacity of the blocks. This heuristic can be called automatically by the adjust block limits heuristic.

Resource

In the single-mixed resource, you specify the data for the definition of the bucket capacity. The resource maintenance has been enhanced accordingly for SAP APO 3.1.

• Standard capacity tab page

So that the system can derive the bucket capacity of a single-mixed us resource from the productive time, you must set the new from block planning option in the buckets field. This setting automatically sets the dimension of the bucket capacity to time. You process further data for block planning with buckets (overload factors and cycles) on the block planning tab page under maintain blocks.

• Planning parameter tab page

So that a resources can be scheduled finitely, you must set the finite scheduling indicator, as before. In the new finite capacity field, you specify which capacity you want to schedule finitely - the time-continuous capacity or the bucket capacity. In the detailed scheduling strategy, you can change between the capacities to be finitely scheduled.

• Block planning tab page, maintain blocks function

If you have selected the from block planning entry under buckets on the standard capacity tab page, two new columns will be displayed in the block maintenance:

• In the cycle type column, a symbol specifies that a new cycle begins at the beginning of the current block. The cycle ends at the start of the next indicated block, or with the last specified block.

• In the overload (%) column, the factor by which the bucket capacity of the current block is increased, is displayed as the productive time in the block (see below).

Detailed scheduling strategy

For block planning with buckets in SAP APO 3.1, the new scheduling mode find buckets with free capacity has been introduced in the detailed scheduling strategy. You use this mode for finite scheduling of the bucket capacity of block-planned single-mixed resources and infinite scheduling of the time-continuous capacity of all resources. If you want to finitely schedule the time-continuous capacity of a block-planned single-mixed resource (and all other resources), you use the existing find slots scheduling mode. Other finite scheduling modes are not suitable.

Reconciliation of production process model and resource

A prerequisite for block planning with buckets is the consistent maintenance of the resource capacity data (time-continuous capacity and bucket capacity) and the resource consumption of the activities in the production process model (PPM). In the PPM, the duration of the activity must correspond to the bucket consumption of the activity.

Block planning with productive times and equivalents

The absolute duration of a block on a resource is determined by the start and end date. For block-planned single resources, the absolute duration corresponds to a productive time and possibly a quantity to be produced within a block.

Previously, you could create blocks only with absolute duration. In SAP APO 3.1 you can create new blocks with the productive time in seconds or an equivalent in any unit of measurement. When shifting blocks, the productive time is retained and not the absolute duration of the blocks.

For the definition of equivalents to the productive time, you specify a conversion factor and the desired unit in the block maintenance. To do this, select the Conversion of the productive time tab page under Further Settings on the Interval tab page. To display the equivalent in block maintenance, select Further Settings, and set the Productive time in equivalent indicator on the Display Options tab page.

Effects on Existing Data

Effects on Data Transfer

Effects on System Administration

Effects on Customizing

Further Information

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