Relationship between Goods Issue, Goods Receipt & Invoice Created

Question

Hi Friends !
Facing issue in Prod.
In production, where goods receipt quantity reverts back to 0 in BW after when the invoice is created in SAP. This is after BW was already updated with the correct GR quantity and the delivery complete flag.
Step          DOC_NUM     DOC_ITEM     SCH_LINE    ENT_DATE    PSTNG_DAT  COMPL_DEL   GI_QTY     GR_QTY
Initial load          0005051554     000300     1     01/21/2011     00/00/0000              0     0
Change 1 - Goods Issue     0005051554     000300     1     01/21/2011     00/00/0000              0     0
Change 1 - Goods Issue     0005051554     000300     1     02/14/2011     00/00/0000              53     0
Change 2 - Goods Receipt     0005051554     000300     1     02/14/2011     00/00/0000             -53     0
Change 2 - Goods Receipt     0005051554     000300     1     03/08/2011     3/8/2011        X         53     53
Change 3 - Invoice created     0005051554     000300     1     03/08/2011     3/8/2011        X        -53     -53
Change 3 - Invoice created     0005051554     000300     1     03/21/2011     3/21/2011        X         53     0
Issue : Last record change 3 should have GR_QTY = 53.
Please help how Goods Issue, Good Receipt & Invoice are linked together. Also advise what should be the expected result. How to proceed further. Thanks.
With Regards
Rekha

Answer 1

The values for Change 3 are as per standards.
i.e. That is how the system functions.
Ex: Your Order Qty can be 100 & you can Receipt only 50 if you want to.
Now, GR_QTY = 50.
Coming to Invoice, you can invoice even 100 if you want & then receipt the remaining 50.
If you are Invoicing the full PO quantity, Goods Receipt will be 0.
If you see the field Transfer Process or Transaction Key (BWVORG), it would be clear for you.
For PO creation the value is 1.
For a Goods Receipt the value is 2.
For an Invoice Receipt the value is 3.
Record with the different Process Keys, will signify the action taken on the PO.
When you mark 'Delivery Completed', you are telling the system that we do not require more of this particular material.
So, if you have ordered 100 Qty & receipted & invoiced only 50, & then you mark the Delivery Completion, you will not be able to receipt more of that material for this PO.
(It might sound a little confusing. If you can get some help from your MM consultant, it would be great.)