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  Bucket-Oriented Capacity Check and Detailed Scheduling

You can carry out the following planning steps when using the bucket-oriented capacity check in the CTP process for each receipt element that was created for covering a sales order.

  1. Bucket-Oriented Capacity Check for CTP Check

    In the first planning step, the system carries out a capacity check during the CTP check on the bucket capacity, and reserves the bucket capacity necessary for the capacity requirement. The operations of the order are scheduled infinitely on the time-continuous capacity to determine the completion date.

    The aim of the bucket-oriented capacity check in the CTP check is the determination of a binding delivery date for a sales order, taking into account constraints such as the available capacity and the desired date.

    This guarantees increased response times and capacity load utilization when working online.

  2. Detailed Scheduling Before Transferring Orders to Production

    The plan generated on the basis of the bucket-oriented capacity check is not feasible from a production point of view because the operations are scheduled infinitely. Therefore, detailed scheduling is carried out in a second step in order to generate a feasible production plan. Here, planned orders are finitely scheduled on a time-continuous basis before they are released to production. The orders are then put into a feasible and cost-efficient sequence.

    The aim of detailed scheduling is the generation of a feasible production plan, taking into account all relevant constraints such as the delivery date, setup time and cost, and lead time.

    In contrast to the first step, detailed scheduling uses complex algorithms and larger data volumes are processed; therefore, the second step is suitable for background processing.

    Summary: Two-Step Planning

    Bucket-Oriented Capacity Check

    Detailed Scheduling

    Aim

    Determine feasible delivery date for a sales order

    Generate feasible production plan

    Who

    Sales employee

    Production planner

    Response Times

    High, online

    Larger data volumes, with background processing

    Horizon

    From end of planning time fence to end of planning horizon

    As much as necessary; protected by planning time fence

    Capacity Category

    PP/DS Bucket Capacity

    Time-Continuous Capacity

    Tools

    CTP Check

    DS planning board, PP/DS optimization and heuristics