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Process documentation Collective Purchase Order: Selection and Scheduling  Locate the document in its SAP Library structure

Use

When a collective purchase order is generated, the system first finds the relevant issue document items (warehouse order items or sales order items) whose schedule line quantities should be aggregated. You enter a procurement period and can set an indicator to include backorder documents to determine which issue document items are relevant. The system uses scheduling functions from the area of Logistics Execution to calculate the delivery generation date of the schedule lines in the issue document items.

The schedule line interval you enter also affects how the system calculates the schedule line dates and quantities in the collective purchase order items. In generating collective purchase orders, you can specify on the initial screen whether the system should schedule in working days or calendar days.

Prerequisites

Before you can generate collective purchase orders, the master data must be maintained as follows:

A distribution profile must be entered in the Purchasing/distribution data.

A distribution profile must be entered in the distribution center logistics data.

Process Flow

This graphic is explained in the accompanying text

  1. Determining relevant issue document items

    2. The system searches for all issue document items where the delivery generation dates (date and time) of all the schedule lines is within the procurement period. Delivery generation dates that are at the start or end of the procurement period are considered as being within the period.

    The generation date is either the date of article staging or the date of transportation planning, whichever is earlier. It is determined in collective processing of due documents. For further information, see Scheduling Transportation and Shipping.

  2. Check date of any necessary replenishment

If you do not want to include any backorder documents, the system assumes that the goods receipt is complete at the beginning of the distribution process. It therefore only selects issue document items for which the following requirements apply:
      1. current date/time + replenishment lead-time < first schedule line date
      2. all schedule line dates < end of procurement period

(Note: replenishment lead-time = planned delivery time + goods receipt processing time)

If you want backorder documents included, the system does not check the replenishment lead-time.
  1. Calculate schedule line date for collective purchase order item

After the system has determined the relevant issue document items, it calculates the schedule lines dates of each collective purchase order item as follows:
    1. The system divides up the procurement period using the schedule line interval defined. It begins at the start of the procurement period. The individual intervals are calculated by adding on schedule lines intervals until the end of the procurement period is reached.
    2. The system checks for each interval whether the delivery generation date of an issue document schedule line is within the interval.
    3. If it is, the schedule line date of the collective purchase order item is the earliest date in the interval minus the goods receipt processing time. The total quantities of the relevant issue document schedule lines therefore make up the schedule lines quantity in the collective purchase order item.

The following graphics show an example of the procurement period split into two intervals. For each of the two intervals, the issue document schedule lines are combined in a collective purchase order item.

This graphic is explained in the accompanying text

This graphic is explained in the accompanying text