Calculating the GR and IR quantity

Question

Hi Experts,
     My requirement is to calculate the Goods Receipt  and Invoice Receipt quantity for single Purchase order.
for eg :  1 PO has quantity - > 25.
{ if GR < IR } it should go to block .
   consider 3 GR'S are there for single PO and 1 IR
( GR  - >  8
  GR  - >  7
  GR - >  10 )
IR - > 25.
in the first loop it has to check with ( 8 - 25)     (25- 8 = 17)
then ( 7 - 17)          (17- 7 = 10)
then (10 -10)
how to build the logic for this?

Answer 1

It is not just GR or IR quantities as there may be GR reversals and IR cancellations. So you need to consider net GR quantity (GR - Reversal if any) and net IR quantity (Invoice - Invoice Cancellation quantity) for each PO item.
We built similar logic in one of our project.
1. Fetch good receipts from linked PO items in EKBE where BEWTP = 'E' and VGABE = '1'
2. Fetch invoice receipts from linked PO items in EKBE where BEWTP = 'Q' and VGABE = '2'
3. Fetch any IR cancellations (RBKP-STBLG, STJAH) if any linked to the the IR
4. The goods receipts will be positive if SHKZG = S and negative (reversal) if SHKZG = H
Using the above information you can calculate total GR qty, total IR quantity and remaining GR quantity that is not invoiced.
Rob, thank you. Advise taken!