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Symptom

It is not clear how system calculate the reduced quantity in ‘Confirmation’ tab of Purchase Order (PO).

Resolution

Please first read SAP Note 75495 and then refer to the following example and explanation.

  1. Check customizing : T-code OLME -> Confirmations -> Set Up Confirmation Control -> confirmation control key (for example, Z001)
    (0 SL  Schedule Line)
    1 AB  Order acknowledgment
    2 GW Rough GR
    3 LA  Shipping Notificat.
  2. T-code ME21N  create Purchase Order (PO) with confirmation control key (for example, Z001).
  3. Insert Confirmation Category ‘AB’ (Delivery date 01.10.2013; Quantity 10). Confirmation Category ‘AB’ will reduce ‘SL’ (This can be checked in table EKET, field DABMG).
  4. Insert Confirmation Category ‘GW’① (Delivery date 01.10.2013; Quantity 5)
    Confirmation Category ‘GW’① can reduce Confirmation Category ‘SL’ and ‘AB’ (higher sequence reduce lower sequence). System will compare all the Confirmation Category’s delivery date first (‘AB’ < ‘SL’), the reduce sequence should be ‘AB’ -> ‘SL’. As a result ‘Quantity Reduced’ of ‘AB’ is updated as 5).
  5. Insert Confirmation Category ‘GW’② (Delivery date 01.10.2013; Quantity 2).
    Confirmation Category ‘GW’② can reduce Confirmation Category ‘SL’ and ‘AB’ (higher sequence reduce lower sequence). System will compare all the Confirmation Category’s delivery date first (AB < SL), so the reduce sequence should be ‘AB’ -> ‘SL’. As a result the ‘Quantity Reduced’ of ‘AB’ is updated as 5 + 2 = 7.
  6. Insert Confirmation Category ‘LA’ (Delivery date 08.10.2013; Quantity 9)
    Confirmation Category ‘LA’ can reduce Confirmation Category ‘SL’, ‘AB’, ‘GW’① and ‘GW’②.
    System will compare all the Confirmation Category’s delivery date first (‘AB’ = ‘GW’① = ‘GW’② < ‘SL’), then compare the sequence of Confirmation Category (‘AB’ < ‘GW①’ = ‘GW②’), at last compare the sequence number of same Confirmation Category (‘GW’① < ‘GW’②). So the reduce sequence should be ‘AB’ -> ‘GW’① -> ‘GW’② -> ‘SL’. As a result ‘LA’ reduced ‘AB’ 3 quantity, reduced  ‘GW’① 5 quantity, and reduced ‘GW’② 1 quantity (since only 9 – 3 – 5 = 1 left).

Please refer to KBA 1922176 for more detailed information.

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