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 Recreating Procurement Proposals

Use

If you change a sales order for which a multilevel ATP check or a CTP process ) has already been executed and then carry out a check again, the ATP tree structures or the procurement proposals that were created in Production Planning and Detailed Scheduling (PP/DS) from the ATP tree structures may be "obsolete".

This may cause problems, above all if the ATP tree structures for the sales order have already been converted into procurement proposals and you bring forward the desired date/time or increase the desired quantity. Since the ATP check checks against existing procurement proposals, the system cannot bring forward the confirmation date/time if you specify an earlier desired date/time for the simple reason that receipt elements - although late – exist. A quantity increase results in an order split.

If you use the Recreate Procurement Proposals function, the system ignores the original procurement proposals during the ATP check in the sales order and replaces them if necessary with new, more suitable procurement proposals after the sales order has been saved.

The recreation of receipts during a new ATP/CTP check as a result of a change to an existing sales order has the following advantages:

  • If the desired date/time is changed (brought forward, for example), the system creates a new receipt element in line with the desired date/time and is thus able to confirm the new date/time (provided there is enough free capacity). The superfluous receipt element is deleted.

  • If the desired quantity in the sales order is increased, the system creates a new receipt element amounting to the new order quantity. The superfluous receipt element is deleted.

Prerequisites

  • You have set the Recreate Receipt Elements indicator in the check instructions in Customizing for the Global ATP Check.

  • In the product master (on the ATP tab page) you have specified a horizon for the recreation of receipt elements.

  • In order that the new function can be used not only for make-to-order production but also in connection with make-to-stock production strategies , the following additional prerequisites must be satisfied in the case of make-to-stock production :

    • You must use fixed pegging in order to be able to fix the assignment of the receipt element to the customer requirement made by the ATP check. For this purpose, you must have selected the Creation of Fixed Pegging-Relationships option in the Fix. Pegging in CTP/ATP field and entered the class /SAPAPO/CL_RRP_CTP in the ABAP Class for CTP Processes field in the PP Planning Procedure .

    • In order that the system can create a fixed pegging relationship between a receipt element and the assigned customer requirement, you must have selected the Characteristic Evaluation option in the check mode in the Production Type field.

    • The receipt element must be assigned to just one sales order item. You achieve this by previously having set lot-for-lot for the product to be checked.In this case, the system creates just one receipt element for the requirement and assigns this element to the pegged requirement.

Features

The system behavior depends on whether an original ATP tree structure has already been converted into procurement proposals in PP/DS at the time of the renewed ATP check, as follows:

  • The original ATP tree structure has not yet been converted

    Here, the original ATP tree structure still exists, and no procurement proposals have yet been created. In this case, the system replaces the original ATP structure with the new one when the changed sales order is saved.

  • The original ATP tree structure has already been converted

    Here, the procurement proposals have already been created and the ATP tree structure no longer exists. In this case, the system creates adjustment records for the procurement proposals whose availability date is outside the horizon for the recreation of receipts (recreation horizon) that you have specified on the ATP tab page in the location product master. These procurement proposals are then no longer visible for the new check.

    If you then save the changed sales order, the system:

    • Deletes the adjustment records

    • Creates a new ATP tree structure

    • Immediately deletes the procurement proposals belonging to the original ATP tree structure and whose availability date is outside the recreation horizon.

      The deletion takes place irrespective of the status of the procurement proposals. However, the system can only delete the procurement proposals that have not yet been transferred to the SAP R/3 system.

      If you do not save the changed sales order, the system deletes the adjustment records again and retains the original ATP tree structure or the original procurement proposals.

For more information, see Reactions to the Availability Check .

Restrictions

  • In the CTP process:

    If the receipt elements are fixed (PP-fixed, input-fixed, or activity-fixed), the system can no longer delete them. The ATP check therefore takes into account the receipt elements that cannot be replaced by new ones.

  • In the case of a multilevel ATP check

    If the indicator for multilevel ATP check has been set for the receipt element and you additionally set the conversion indicator, this order cannot be deleted but is taken into account by the ATP check.

  • In both cases:

    As a general rule, you cannot use this new function if you are using the Collaboration Via Scheduling Agreements functionality.