Use
When you execute a capacity availability check, the system checks the capacity availability for all operations in an order on a capacity level. In doing so, the system considers the existing capacity load for the capacities - the basic load.
Prerequisites
If you do not want the system to use the SAP standard settings to execute the check, you have to enter the desired Overall profile for the capacity availability check in Customizing for the Availability check. If you do not enter a profile, the system uses:
If you want the system to execute finite scheduling after the check in the collective processing of production orders, you must set this in Customizing in the Production control profile.
Features
During the check, the system only considers the capacities relevant to the capacity scheduling.
Check sequence
The check sequence is defined by the numerical sequence of the operations in the order.
Period split
The system carries out the check periodically based on the period split that you set in Customizing (Period profile in the overall profile). The smallest period split you can set is a daily split. For each period, the system compares the capacity requirement needed by the operation to be checked in this period with the free capacity of the capacities in this period.
Available capacity in a period
The free capacity of a capacity is the difference between the available capacity of the capacity (including the allowed overload) and the basic load. You define in Customizing (Selection profile in the overall profile) which capacity requirement the system interprets as the basic load. The standard definition of the basic load is the capacity requirement of dispatched operations and operations with confirmed capacity for all order types (work orders, planned orders and SOP orders). For further information, see
Determination of basic load.The free capacity can also be reduced by the backlog. The system considers the capacity requirements of operations that lie in the past, if you have set the system to do this in Customizing. The system loads these requirements temporarily into the current and the following period, up to the maximum load limit of the capacity - taking into account the basic load. Therefore, a greatly reduced capacity is available for the operation to be checked. For further information, see
Considering the backlog.Capacity requirements of an operation in a period
You specify in Customizing (Selection profile in the overall profile) which capacity requirements the system considers during the check (on which scheduling level, to which order type, etc.)
The system determines, with the help of the distribution key that you entered in Customizing (Evaluation profile in the overall profile), the capacity requirement of an operation in a period. The distribution key specifies how the capacity requirement of an operation is distributed over the period. For further information, see
Distribution of capacity requirements.
Capacity overload
The system interprets a capacity load as a Capacity overload when the capacity load in a period exceeds the load limit of the capacity (100% plus the allowed overload).
Activities
Interactive order processing
If the system determines during the check that the capacities are loaded to more than 100% of the available capacity, the system takes you to the Capacity availability dialog box, where you can do the following:
For further information, see
Check capacity availability online.Collective processing of production orders
After the check, the system executes finite scheduling automatically, if you have set it to do this in Customizing in the Production control profile.
If you have not entered any settings for finite scheduling, the system - depending on the Customizing settings in the Production control profile - incorporates into the basic load the capacity requirements of the operations that are feasilbe according to capacity. The following is possible:
Collective processing of other orders
After the check, the capacity availability check is finished. The system does not execute finite scheduling. When all operations in an order are feasible according to capacity, the system incorporates all capacity requirements of all operations into the basic load; otherwise it does not incorporate any.